ConnectivityService.java revision ed748c2c56b8f4845cdf4e90161ed8ede933f087
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE; 20import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; 21import static android.net.ConnectivityManager.NETID_UNSET; 22import static android.net.ConnectivityManager.TYPE_NONE; 23import static android.net.ConnectivityManager.TYPE_VPN; 24import static android.net.ConnectivityManager.getNetworkTypeName; 25import static android.net.ConnectivityManager.isNetworkTypeValid; 26import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL; 27import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; 28import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; 29import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; 30import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; 31import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; 32import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; 33import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; 34 35import android.annotation.Nullable; 36import android.app.BroadcastOptions; 37import android.app.Notification; 38import android.app.NotificationManager; 39import android.app.PendingIntent; 40import android.content.BroadcastReceiver; 41import android.content.ContentResolver; 42import android.content.Context; 43import android.content.Intent; 44import android.content.IntentFilter; 45import android.content.pm.PackageManager; 46import android.content.res.Configuration; 47import android.content.res.Resources; 48import android.database.ContentObserver; 49import android.net.ConnectivityManager; 50import android.net.ConnectivityManager.PacketKeepalive; 51import android.net.IConnectivityManager; 52import android.net.INetworkManagementEventObserver; 53import android.net.INetworkPolicyListener; 54import android.net.INetworkPolicyManager; 55import android.net.INetworkStatsService; 56import android.net.LinkProperties; 57import android.net.LinkProperties.CompareResult; 58import android.net.Network; 59import android.net.NetworkAgent; 60import android.net.NetworkCapabilities; 61import android.net.NetworkConfig; 62import android.net.NetworkInfo; 63import android.net.NetworkInfo.DetailedState; 64import android.net.NetworkMisc; 65import android.net.NetworkQuotaInfo; 66import android.net.NetworkRequest; 67import android.net.NetworkState; 68import android.net.NetworkUtils; 69import android.net.Proxy; 70import android.net.ProxyInfo; 71import android.net.RouteInfo; 72import android.net.UidRange; 73import android.net.Uri; 74import android.net.metrics.ConnectivityServiceChangeEvent; 75import android.os.Binder; 76import android.os.Build; 77import android.os.Bundle; 78import android.os.FileUtils; 79import android.os.Handler; 80import android.os.HandlerThread; 81import android.os.IBinder; 82import android.os.INetworkManagementService; 83import android.os.Looper; 84import android.os.Message; 85import android.os.Messenger; 86import android.os.ParcelFileDescriptor; 87import android.os.PowerManager; 88import android.os.Process; 89import android.os.RemoteException; 90import android.os.ResultReceiver; 91import android.os.SystemProperties; 92import android.os.UserHandle; 93import android.os.UserManager; 94import android.provider.Settings; 95import android.security.Credentials; 96import android.security.KeyStore; 97import android.telephony.TelephonyManager; 98import android.text.TextUtils; 99import android.util.LocalLog; 100import android.util.LocalLog.ReadOnlyLocalLog; 101import android.util.Pair; 102import android.util.Slog; 103import android.util.SparseArray; 104import android.util.SparseBooleanArray; 105import android.util.SparseIntArray; 106import android.util.Xml; 107 108import com.android.internal.R; 109import com.android.internal.annotations.GuardedBy; 110import com.android.internal.annotations.VisibleForTesting; 111import com.android.internal.app.IBatteryStats; 112import com.android.internal.net.LegacyVpnInfo; 113import com.android.internal.net.NetworkStatsFactory; 114import com.android.internal.net.VpnConfig; 115import com.android.internal.net.VpnInfo; 116import com.android.internal.net.VpnProfile; 117import com.android.internal.util.AsyncChannel; 118import com.android.internal.util.IndentingPrintWriter; 119import com.android.internal.util.MessageUtils; 120import com.android.internal.util.XmlUtils; 121import com.android.server.am.BatteryStatsService; 122import com.android.server.connectivity.DataConnectionStats; 123import com.android.server.connectivity.KeepaliveTracker; 124import com.android.server.connectivity.NetworkDiagnostics; 125import com.android.server.connectivity.Nat464Xlat; 126import com.android.server.connectivity.NetworkAgentInfo; 127import com.android.server.connectivity.NetworkMonitor; 128import com.android.server.connectivity.PacManager; 129import com.android.server.connectivity.PermissionMonitor; 130import com.android.server.connectivity.Tethering; 131import com.android.server.connectivity.Vpn; 132import com.android.server.net.BaseNetworkObserver; 133import com.android.server.net.LockdownVpnTracker; 134import com.google.android.collect.Lists; 135import com.google.android.collect.Sets; 136 137import org.xmlpull.v1.XmlPullParser; 138import org.xmlpull.v1.XmlPullParserException; 139 140import java.io.File; 141import java.io.FileDescriptor; 142import java.io.FileNotFoundException; 143import java.io.FileReader; 144import java.io.IOException; 145import java.io.PrintWriter; 146import java.net.Inet4Address; 147import java.net.InetAddress; 148import java.net.UnknownHostException; 149import java.util.ArrayDeque; 150import java.util.ArrayList; 151import java.util.Arrays; 152import java.util.Collection; 153import java.util.HashMap; 154import java.util.HashSet; 155import java.util.SortedSet; 156import java.util.TreeSet; 157import java.util.List; 158import java.util.Map; 159import java.util.Objects; 160 161/** 162 * @hide 163 */ 164public class ConnectivityService extends IConnectivityManager.Stub 165 implements PendingIntent.OnFinished { 166 private static final String TAG = "ConnectivityService"; 167 168 private static final boolean DBG = true; 169 private static final boolean VDBG = false; 170 171 private static final boolean LOGD_RULES = false; 172 private static final boolean LOGD_BLOCKED_NETWORKINFO = true; 173 174 // TODO: create better separation between radio types and network types 175 176 // how long to wait before switching back to a radio's default network 177 private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; 178 // system property that can override the above value 179 private static final String NETWORK_RESTORE_DELAY_PROP_NAME = 180 "android.telephony.apn-restore"; 181 182 // How long to wait before putting up a "This network doesn't have an Internet connection, 183 // connect anyway?" dialog after the user selects a network that doesn't validate. 184 private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; 185 186 // How long to delay to removal of a pending intent based request. 187 // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS 188 private final int mReleasePendingIntentDelayMs; 189 190 private Tethering mTethering; 191 192 private final PermissionMonitor mPermissionMonitor; 193 194 private KeyStore mKeyStore; 195 196 @GuardedBy("mVpns") 197 private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>(); 198 199 private boolean mLockdownEnabled; 200 private LockdownVpnTracker mLockdownTracker; 201 202 /** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */ 203 private Object mRulesLock = new Object(); 204 /** Currently active network rules by UID. */ 205 private SparseIntArray mUidRules = new SparseIntArray(); 206 /** Set of ifaces that are costly. */ 207 private HashSet<String> mMeteredIfaces = Sets.newHashSet(); 208 209 final private Context mContext; 210 private int mNetworkPreference; 211 // 0 is full bad, 100 is full good 212 private int mDefaultInetConditionPublished = 0; 213 214 private int mNumDnsEntries; 215 216 private boolean mTestMode; 217 private static ConnectivityService sServiceInstance; 218 219 private INetworkManagementService mNetd; 220 private INetworkStatsService mStatsService; 221 private INetworkPolicyManager mPolicyManager; 222 223 private String mCurrentTcpBufferSizes; 224 225 private static final int ENABLED = 1; 226 private static final int DISABLED = 0; 227 228 private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( 229 new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class }); 230 231 private enum ReapUnvalidatedNetworks { 232 // Tear down networks that have no chance (e.g. even if validated) of becoming 233 // the highest scoring network satisfying a NetworkRequest. This should be passed when 234 // all networks have been rematched against all NetworkRequests. 235 REAP, 236 // Don't reap networks. This should be passed when some networks have not yet been 237 // rematched against all NetworkRequests. 238 DONT_REAP 239 }; 240 241 /** 242 * used internally to change our mobile data enabled flag 243 */ 244 private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; 245 246 /** 247 * used internally to clear a wakelock when transitioning 248 * from one net to another. Clear happens when we get a new 249 * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens 250 * after a timeout if no network is found (typically 1 min). 251 */ 252 private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; 253 254 /** 255 * used internally to reload global proxy settings 256 */ 257 private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; 258 259 /** 260 * PAC manager has received new port. 261 */ 262 private static final int EVENT_PROXY_HAS_CHANGED = 16; 263 264 /** 265 * used internally when registering NetworkFactories 266 * obj = NetworkFactoryInfo 267 */ 268 private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; 269 270 /** 271 * used internally when registering NetworkAgents 272 * obj = Messenger 273 */ 274 private static final int EVENT_REGISTER_NETWORK_AGENT = 18; 275 276 /** 277 * used to add a network request 278 * includes a NetworkRequestInfo 279 */ 280 private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; 281 282 /** 283 * indicates a timeout period is over - check if we had a network yet or not 284 * and if not, call the timeout calback (but leave the request live until they 285 * cancel it. 286 * includes a NetworkRequestInfo 287 */ 288 private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; 289 290 /** 291 * used to add a network listener - no request 292 * includes a NetworkRequestInfo 293 */ 294 private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; 295 296 /** 297 * used to remove a network request, either a listener or a real request 298 * arg1 = UID of caller 299 * obj = NetworkRequest 300 */ 301 private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; 302 303 /** 304 * used internally when registering NetworkFactories 305 * obj = Messenger 306 */ 307 private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; 308 309 /** 310 * used internally to expire a wakelock when transitioning 311 * from one net to another. Expire happens when we fail to find 312 * a new network (typically after 1 minute) - 313 * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found 314 * a replacement network. 315 */ 316 private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; 317 318 /** 319 * Used internally to indicate the system is ready. 320 */ 321 private static final int EVENT_SYSTEM_READY = 25; 322 323 /** 324 * used to add a network request with a pending intent 325 * obj = NetworkRequestInfo 326 */ 327 private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; 328 329 /** 330 * used to remove a pending intent and its associated network request. 331 * arg1 = UID of caller 332 * obj = PendingIntent 333 */ 334 private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; 335 336 /** 337 * used to specify whether a network should be used even if unvalidated. 338 * arg1 = whether to accept the network if it's unvalidated (1 or 0) 339 * arg2 = whether to remember this choice in the future (1 or 0) 340 * obj = network 341 */ 342 private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; 343 344 /** 345 * used to ask the user to confirm a connection to an unvalidated network. 346 * obj = network 347 */ 348 private static final int EVENT_PROMPT_UNVALIDATED = 29; 349 350 /** 351 * used internally to (re)configure mobile data always-on settings. 352 */ 353 private static final int EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON = 30; 354 355 /** 356 * used to add a network listener with a pending intent 357 * obj = NetworkRequestInfo 358 */ 359 private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; 360 361 /** Handler thread used for both of the handlers below. */ 362 @VisibleForTesting 363 protected final HandlerThread mHandlerThread; 364 /** Handler used for internal events. */ 365 final private InternalHandler mHandler; 366 /** Handler used for incoming {@link NetworkStateTracker} events. */ 367 final private NetworkStateTrackerHandler mTrackerHandler; 368 369 private boolean mSystemReady; 370 private Intent mInitialBroadcast; 371 372 private PowerManager.WakeLock mNetTransitionWakeLock; 373 private String mNetTransitionWakeLockCausedBy = ""; 374 private int mNetTransitionWakeLockSerialNumber; 375 private int mNetTransitionWakeLockTimeout; 376 private final PowerManager.WakeLock mPendingIntentWakeLock; 377 378 // used in DBG mode to track inet condition reports 379 private static final int INET_CONDITION_LOG_MAX_SIZE = 15; 380 private ArrayList mInetLog; 381 382 // track the current default http proxy - tell the world if we get a new one (real change) 383 private volatile ProxyInfo mDefaultProxy = null; 384 private Object mProxyLock = new Object(); 385 private boolean mDefaultProxyDisabled = false; 386 387 // track the global proxy. 388 private ProxyInfo mGlobalProxy = null; 389 390 private PacManager mPacManager = null; 391 392 final private SettingsObserver mSettingsObserver; 393 394 private UserManager mUserManager; 395 396 NetworkConfig[] mNetConfigs; 397 int mNetworksDefined; 398 399 // the set of network types that can only be enabled by system/sig apps 400 List mProtectedNetworks; 401 402 private DataConnectionStats mDataConnectionStats; 403 404 TelephonyManager mTelephonyManager; 405 406 private KeepaliveTracker mKeepaliveTracker; 407 408 // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp 409 private final static int MIN_NET_ID = 100; // some reserved marks 410 private final static int MAX_NET_ID = 65535; 411 private int mNextNetId = MIN_NET_ID; 412 413 // sequence number of NetworkRequests 414 private int mNextNetworkRequestId = 1; 415 416 // NetworkRequest activity String log entries. 417 private static final int MAX_NETWORK_REQUEST_LOGS = 20; 418 private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); 419 420 // Array of <Network,ReadOnlyLocalLogs> tracking network validation and results 421 private static final int MAX_VALIDATION_LOGS = 10; 422 private final ArrayDeque<Pair<Network,ReadOnlyLocalLog>> mValidationLogs = 423 new ArrayDeque<Pair<Network,ReadOnlyLocalLog>>(MAX_VALIDATION_LOGS); 424 425 private void addValidationLogs(ReadOnlyLocalLog log, Network network) { 426 synchronized(mValidationLogs) { 427 while (mValidationLogs.size() >= MAX_VALIDATION_LOGS) { 428 mValidationLogs.removeLast(); 429 } 430 mValidationLogs.addFirst(new Pair(network, log)); 431 } 432 } 433 434 /** 435 * Implements support for the legacy "one network per network type" model. 436 * 437 * We used to have a static array of NetworkStateTrackers, one for each 438 * network type, but that doesn't work any more now that we can have, 439 * for example, more that one wifi network. This class stores all the 440 * NetworkAgentInfo objects that support a given type, but the legacy 441 * API will only see the first one. 442 * 443 * It serves two main purposes: 444 * 445 * 1. Provide information about "the network for a given type" (since this 446 * API only supports one). 447 * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if 448 * the first network for a given type changes, or if the default network 449 * changes. 450 */ 451 private class LegacyTypeTracker { 452 453 private static final boolean DBG = true; 454 private static final boolean VDBG = false; 455 456 /** 457 * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). 458 * Each list holds references to all NetworkAgentInfos that are used to 459 * satisfy requests for that network type. 460 * 461 * This array is built out at startup such that an unsupported network 462 * doesn't get an ArrayList instance, making this a tristate: 463 * unsupported, supported but not active and active. 464 * 465 * The actual lists are populated when we scan the network types that 466 * are supported on this device. 467 */ 468 private ArrayList<NetworkAgentInfo> mTypeLists[]; 469 470 public LegacyTypeTracker() { 471 mTypeLists = (ArrayList<NetworkAgentInfo>[]) 472 new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; 473 } 474 475 public void addSupportedType(int type) { 476 if (mTypeLists[type] != null) { 477 throw new IllegalStateException( 478 "legacy list for type " + type + "already initialized"); 479 } 480 mTypeLists[type] = new ArrayList<NetworkAgentInfo>(); 481 } 482 483 public boolean isTypeSupported(int type) { 484 return isNetworkTypeValid(type) && mTypeLists[type] != null; 485 } 486 487 public NetworkAgentInfo getNetworkForType(int type) { 488 if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { 489 return mTypeLists[type].get(0); 490 } else { 491 return null; 492 } 493 } 494 495 private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, 496 boolean isDefaultNetwork) { 497 if (DBG) { 498 log("Sending " + state + 499 " broadcast for type " + type + " " + nai.name() + 500 " isDefaultNetwork=" + isDefaultNetwork); 501 } 502 } 503 504 /** Adds the given network to the specified legacy type list. */ 505 public void add(int type, NetworkAgentInfo nai) { 506 if (!isTypeSupported(type)) { 507 return; // Invalid network type. 508 } 509 if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); 510 511 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 512 if (list.contains(nai)) { 513 return; 514 } 515 516 list.add(nai); 517 518 // Send a broadcast if this is the first network of its type or if it's the default. 519 final boolean isDefaultNetwork = isDefaultNetwork(nai); 520 if (list.size() == 1 || isDefaultNetwork) { 521 maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); 522 sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); 523 } 524 } 525 526 /** Removes the given network from the specified legacy type list. */ 527 public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { 528 ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 529 if (list == null || list.isEmpty()) { 530 return; 531 } 532 533 final boolean wasFirstNetwork = list.get(0).equals(nai); 534 535 if (!list.remove(nai)) { 536 return; 537 } 538 539 final DetailedState state = DetailedState.DISCONNECTED; 540 541 if (wasFirstNetwork || wasDefault) { 542 maybeLogBroadcast(nai, state, type, wasDefault); 543 sendLegacyNetworkBroadcast(nai, state, type); 544 } 545 546 if (!list.isEmpty() && wasFirstNetwork) { 547 if (DBG) log("Other network available for type " + type + 548 ", sending connected broadcast"); 549 final NetworkAgentInfo replacement = list.get(0); 550 maybeLogBroadcast(replacement, state, type, isDefaultNetwork(replacement)); 551 sendLegacyNetworkBroadcast(replacement, state, type); 552 } 553 } 554 555 /** Removes the given network from all legacy type lists. */ 556 public void remove(NetworkAgentInfo nai, boolean wasDefault) { 557 if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); 558 for (int type = 0; type < mTypeLists.length; type++) { 559 remove(type, nai, wasDefault); 560 } 561 } 562 563 // send out another legacy broadcast - currently only used for suspend/unsuspend 564 // toggle 565 public void update(NetworkAgentInfo nai) { 566 final boolean isDefault = isDefaultNetwork(nai); 567 final DetailedState state = nai.networkInfo.getDetailedState(); 568 for (int type = 0; type < mTypeLists.length; type++) { 569 final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; 570 final boolean contains = (list != null && list.contains(nai)); 571 final boolean isFirst = (list != null && list.size() > 0 && nai == list.get(0)); 572 if (isFirst || (contains && isDefault)) { 573 maybeLogBroadcast(nai, state, type, isDefault); 574 sendLegacyNetworkBroadcast(nai, state, type); 575 } 576 } 577 } 578 579 private String naiToString(NetworkAgentInfo nai) { 580 String name = (nai != null) ? nai.name() : "null"; 581 String state = (nai.networkInfo != null) ? 582 nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : 583 "???/???"; 584 return name + " " + state; 585 } 586 587 public void dump(IndentingPrintWriter pw) { 588 pw.println("mLegacyTypeTracker:"); 589 pw.increaseIndent(); 590 pw.print("Supported types:"); 591 for (int type = 0; type < mTypeLists.length; type++) { 592 if (mTypeLists[type] != null) pw.print(" " + type); 593 } 594 pw.println(); 595 pw.println("Current state:"); 596 pw.increaseIndent(); 597 for (int type = 0; type < mTypeLists.length; type++) { 598 if (mTypeLists[type] == null|| mTypeLists[type].size() == 0) continue; 599 for (NetworkAgentInfo nai : mTypeLists[type]) { 600 pw.println(type + " " + naiToString(nai)); 601 } 602 } 603 pw.decreaseIndent(); 604 pw.decreaseIndent(); 605 pw.println(); 606 } 607 } 608 private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); 609 610 @VisibleForTesting 611 protected HandlerThread createHandlerThread() { 612 return new HandlerThread("ConnectivityServiceThread"); 613 } 614 615 public ConnectivityService(Context context, INetworkManagementService netManager, 616 INetworkStatsService statsService, INetworkPolicyManager policyManager) { 617 if (DBG) log("ConnectivityService starting up"); 618 619 mDefaultRequest = createInternetRequestForTransport(-1); 620 NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, 621 new Binder(), NetworkRequestType.REQUEST); 622 mNetworkRequests.put(mDefaultRequest, defaultNRI); 623 mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); 624 625 mDefaultMobileDataRequest = createInternetRequestForTransport( 626 NetworkCapabilities.TRANSPORT_CELLULAR); 627 628 mHandlerThread = createHandlerThread(); 629 mHandlerThread.start(); 630 mHandler = new InternalHandler(mHandlerThread.getLooper()); 631 mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); 632 633 // setup our unique device name 634 if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { 635 String id = Settings.Secure.getString(context.getContentResolver(), 636 Settings.Secure.ANDROID_ID); 637 if (id != null && id.length() > 0) { 638 String name = new String("android-").concat(id); 639 SystemProperties.set("net.hostname", name); 640 } 641 } 642 643 mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), 644 Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); 645 646 mContext = checkNotNull(context, "missing Context"); 647 mNetd = checkNotNull(netManager, "missing INetworkManagementService"); 648 mStatsService = checkNotNull(statsService, "missing INetworkStatsService"); 649 mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager"); 650 mKeyStore = KeyStore.getInstance(); 651 mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); 652 653 try { 654 mPolicyManager.registerListener(mPolicyListener); 655 } catch (RemoteException e) { 656 // ouch, no rules updates means some processes may never get network 657 loge("unable to register INetworkPolicyListener" + e.toString()); 658 } 659 660 final PowerManager powerManager = (PowerManager) context.getSystemService( 661 Context.POWER_SERVICE); 662 mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 663 mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( 664 com.android.internal.R.integer.config_networkTransitionTimeout); 665 mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); 666 667 mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; 668 669 // TODO: What is the "correct" way to do determine if this is a wifi only device? 670 boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); 671 log("wifiOnly=" + wifiOnly); 672 String[] naStrings = context.getResources().getStringArray( 673 com.android.internal.R.array.networkAttributes); 674 for (String naString : naStrings) { 675 try { 676 NetworkConfig n = new NetworkConfig(naString); 677 if (VDBG) log("naString=" + naString + " config=" + n); 678 if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { 679 loge("Error in networkAttributes - ignoring attempt to define type " + 680 n.type); 681 continue; 682 } 683 if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { 684 log("networkAttributes - ignoring mobile as this dev is wifiOnly " + 685 n.type); 686 continue; 687 } 688 if (mNetConfigs[n.type] != null) { 689 loge("Error in networkAttributes - ignoring attempt to redefine type " + 690 n.type); 691 continue; 692 } 693 mLegacyTypeTracker.addSupportedType(n.type); 694 695 mNetConfigs[n.type] = n; 696 mNetworksDefined++; 697 } catch(Exception e) { 698 // ignore it - leave the entry null 699 } 700 } 701 702 // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. 703 if (mNetConfigs[TYPE_VPN] == null) { 704 // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we 705 // don't need to add TYPE_VPN to mNetConfigs. 706 mLegacyTypeTracker.addSupportedType(TYPE_VPN); 707 mNetworksDefined++; // used only in the log() statement below. 708 } 709 710 if (VDBG) log("mNetworksDefined=" + mNetworksDefined); 711 712 mProtectedNetworks = new ArrayList<Integer>(); 713 int[] protectedNetworks = context.getResources().getIntArray( 714 com.android.internal.R.array.config_protectedNetworks); 715 for (int p : protectedNetworks) { 716 if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { 717 mProtectedNetworks.add(p); 718 } else { 719 if (DBG) loge("Ignoring protectedNetwork " + p); 720 } 721 } 722 723 mTestMode = SystemProperties.get("cm.test.mode").equals("true") 724 && SystemProperties.get("ro.build.type").equals("eng"); 725 726 mTethering = new Tethering(mContext, mNetd, statsService); 727 728 mPermissionMonitor = new PermissionMonitor(mContext, mNetd); 729 730 //set up the listener for user state for creating user VPNs 731 IntentFilter intentFilter = new IntentFilter(); 732 intentFilter.addAction(Intent.ACTION_USER_STARTING); 733 intentFilter.addAction(Intent.ACTION_USER_STOPPING); 734 intentFilter.addAction(Intent.ACTION_USER_ADDED); 735 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 736 intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); 737 mContext.registerReceiverAsUser( 738 mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 739 740 try { 741 mNetd.registerObserver(mTethering); 742 mNetd.registerObserver(mDataActivityObserver); 743 } catch (RemoteException e) { 744 loge("Error registering observer :" + e); 745 } 746 747 if (DBG) { 748 mInetLog = new ArrayList(); 749 } 750 751 mSettingsObserver = new SettingsObserver(mContext, mHandler); 752 registerSettingsCallbacks(); 753 754 mDataConnectionStats = new DataConnectionStats(mContext); 755 mDataConnectionStats.startMonitoring(); 756 757 mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); 758 759 mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); 760 761 mKeepaliveTracker = new KeepaliveTracker(mHandler); 762 } 763 764 private NetworkRequest createInternetRequestForTransport(int transportType) { 765 NetworkCapabilities netCap = new NetworkCapabilities(); 766 netCap.addCapability(NET_CAPABILITY_INTERNET); 767 netCap.addCapability(NET_CAPABILITY_NOT_RESTRICTED); 768 if (transportType > -1) { 769 netCap.addTransportType(transportType); 770 } 771 return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); 772 } 773 774 private void handleMobileDataAlwaysOn() { 775 final boolean enable = (Settings.Global.getInt( 776 mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1); 777 final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null); 778 if (enable == isEnabled) { 779 return; // Nothing to do. 780 } 781 782 if (enable) { 783 handleRegisterNetworkRequest(new NetworkRequestInfo( 784 null, mDefaultMobileDataRequest, new Binder(), NetworkRequestType.REQUEST)); 785 } else { 786 handleReleaseNetworkRequest(mDefaultMobileDataRequest, Process.SYSTEM_UID); 787 } 788 } 789 790 private void registerSettingsCallbacks() { 791 // Watch for global HTTP proxy changes. 792 mSettingsObserver.observe( 793 Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), 794 EVENT_APPLY_GLOBAL_HTTP_PROXY); 795 796 // Watch for whether or not to keep mobile data always on. 797 mSettingsObserver.observe( 798 Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), 799 EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON); 800 } 801 802 private synchronized int nextNetworkRequestId() { 803 return mNextNetworkRequestId++; 804 } 805 806 @VisibleForTesting 807 protected int reserveNetId() { 808 synchronized (mNetworkForNetId) { 809 for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { 810 int netId = mNextNetId; 811 if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; 812 // Make sure NetID unused. http://b/16815182 813 if (!mNetIdInUse.get(netId)) { 814 mNetIdInUse.put(netId, true); 815 return netId; 816 } 817 } 818 } 819 throw new IllegalStateException("No free netIds"); 820 } 821 822 private NetworkState getFilteredNetworkState(int networkType, int uid) { 823 NetworkInfo info = null; 824 LinkProperties lp = null; 825 NetworkCapabilities nc = null; 826 Network network = null; 827 String subscriberId = null; 828 829 if (mLegacyTypeTracker.isTypeSupported(networkType)) { 830 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 831 if (nai != null) { 832 synchronized (nai) { 833 info = new NetworkInfo(nai.networkInfo); 834 lp = new LinkProperties(nai.linkProperties); 835 nc = new NetworkCapabilities(nai.networkCapabilities); 836 // Network objects are outwardly immutable so there is no point to duplicating. 837 // Duplicating also precludes sharing socket factories and connection pools. 838 network = nai.network; 839 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 840 } 841 info.setType(networkType); 842 } else { 843 info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), ""); 844 info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); 845 info.setIsAvailable(true); 846 lp = new LinkProperties(); 847 nc = new NetworkCapabilities(); 848 network = null; 849 } 850 info = getFilteredNetworkInfo(info, lp, uid); 851 } 852 853 return new NetworkState(info, lp, nc, network, subscriberId, null); 854 } 855 856 private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { 857 if (network == null) { 858 return null; 859 } 860 synchronized (mNetworkForNetId) { 861 return mNetworkForNetId.get(network.netId); 862 } 863 }; 864 865 private Network[] getVpnUnderlyingNetworks(int uid) { 866 if (!mLockdownEnabled) { 867 int user = UserHandle.getUserId(uid); 868 synchronized (mVpns) { 869 Vpn vpn = mVpns.get(user); 870 if (vpn != null && vpn.appliesToUid(uid)) { 871 return vpn.getUnderlyingNetworks(); 872 } 873 } 874 } 875 return null; 876 } 877 878 private NetworkState getUnfilteredActiveNetworkState(int uid) { 879 NetworkInfo info = null; 880 LinkProperties lp = null; 881 NetworkCapabilities nc = null; 882 Network network = null; 883 String subscriberId = null; 884 885 NetworkAgentInfo nai = getDefaultNetwork(); 886 887 final Network[] networks = getVpnUnderlyingNetworks(uid); 888 if (networks != null) { 889 // getUnderlyingNetworks() returns: 890 // null => there was no VPN, or the VPN didn't specify anything, so we use the default. 891 // empty array => the VPN explicitly said "no default network". 892 // non-empty array => the VPN specified one or more default networks; we use the 893 // first one. 894 if (networks.length > 0) { 895 nai = getNetworkAgentInfoForNetwork(networks[0]); 896 } else { 897 nai = null; 898 } 899 } 900 901 if (nai != null) { 902 synchronized (nai) { 903 info = new NetworkInfo(nai.networkInfo); 904 lp = new LinkProperties(nai.linkProperties); 905 nc = new NetworkCapabilities(nai.networkCapabilities); 906 // Network objects are outwardly immutable so there is no point to duplicating. 907 // Duplicating also precludes sharing socket factories and connection pools. 908 network = nai.network; 909 subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null; 910 } 911 } 912 913 return new NetworkState(info, lp, nc, network, subscriberId, null); 914 } 915 916 /** 917 * Check if UID should be blocked from using the network with the given LinkProperties. 918 */ 919 private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { 920 final boolean networkCostly; 921 final int uidRules; 922 923 final String iface = (lp == null ? "" : lp.getInterfaceName()); 924 synchronized (mRulesLock) { 925 networkCostly = mMeteredIfaces.contains(iface); 926 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 927 } 928 929 if (uidRules == RULE_REJECT_ALL) { 930 return true; 931 } else if ((uidRules == RULE_REJECT_METERED) && networkCostly) { 932 return true; 933 } else { 934 return false; 935 } 936 } 937 938 private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { 939 if (ni == null || !LOGD_BLOCKED_NETWORKINFO) return; 940 boolean removed = false; 941 boolean added = false; 942 synchronized (mBlockedAppUids) { 943 if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { 944 added = true; 945 } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { 946 removed = true; 947 } 948 } 949 if (added) log("Returning blocked NetworkInfo to uid=" + uid); 950 else if (removed) log("Returning unblocked NetworkInfo to uid=" + uid); 951 } 952 953 /** 954 * Return a filtered {@link NetworkInfo}, potentially marked 955 * {@link DetailedState#BLOCKED} based on 956 * {@link #isNetworkWithLinkPropertiesBlocked}. 957 */ 958 private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) { 959 if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) { 960 // network is blocked; clone and override state 961 info = new NetworkInfo(info); 962 info.setDetailedState(DetailedState.BLOCKED, null, null); 963 } 964 if (info != null && mLockdownTracker != null) { 965 info = mLockdownTracker.augmentNetworkInfo(info); 966 if (VDBG) log("returning Locked NetworkInfo"); 967 } 968 return info; 969 } 970 971 /** 972 * Return NetworkInfo for the active (i.e., connected) network interface. 973 * It is assumed that at most one network is active at a time. If more 974 * than one is active, it is indeterminate which will be returned. 975 * @return the info for the active network, or {@code null} if none is 976 * active 977 */ 978 @Override 979 public NetworkInfo getActiveNetworkInfo() { 980 enforceAccessPermission(); 981 final int uid = Binder.getCallingUid(); 982 NetworkState state = getUnfilteredActiveNetworkState(uid); 983 NetworkInfo ni = getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 984 maybeLogBlockedNetworkInfo(ni, uid); 985 return ni; 986 } 987 988 @Override 989 public Network getActiveNetwork() { 990 enforceAccessPermission(); 991 return getActiveNetworkForUidInternal(Binder.getCallingUid()); 992 } 993 994 @Override 995 public Network getActiveNetworkForUid(int uid) { 996 enforceConnectivityInternalPermission(); 997 return getActiveNetworkForUidInternal(uid); 998 } 999 1000 private Network getActiveNetworkForUidInternal(final int uid) { 1001 final int user = UserHandle.getUserId(uid); 1002 int vpnNetId = NETID_UNSET; 1003 synchronized (mVpns) { 1004 final Vpn vpn = mVpns.get(user); 1005 if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); 1006 } 1007 NetworkAgentInfo nai; 1008 if (vpnNetId != NETID_UNSET) { 1009 synchronized (mNetworkForNetId) { 1010 nai = mNetworkForNetId.get(vpnNetId); 1011 } 1012 if (nai != null) return nai.network; 1013 } 1014 nai = getDefaultNetwork(); 1015 if (nai != null && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) nai = null; 1016 return nai != null ? nai.network : null; 1017 } 1018 1019 public NetworkInfo getActiveNetworkInfoUnfiltered() { 1020 enforceAccessPermission(); 1021 final int uid = Binder.getCallingUid(); 1022 NetworkState state = getUnfilteredActiveNetworkState(uid); 1023 return state.networkInfo; 1024 } 1025 1026 @Override 1027 public NetworkInfo getActiveNetworkInfoForUid(int uid) { 1028 enforceConnectivityInternalPermission(); 1029 NetworkState state = getUnfilteredActiveNetworkState(uid); 1030 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1031 } 1032 1033 @Override 1034 public NetworkInfo getNetworkInfo(int networkType) { 1035 enforceAccessPermission(); 1036 final int uid = Binder.getCallingUid(); 1037 if (getVpnUnderlyingNetworks(uid) != null) { 1038 // A VPN is active, so we may need to return one of its underlying networks. This 1039 // information is not available in LegacyTypeTracker, so we have to get it from 1040 // getUnfilteredActiveNetworkState. 1041 NetworkState state = getUnfilteredActiveNetworkState(uid); 1042 if (state.networkInfo != null && state.networkInfo.getType() == networkType) { 1043 return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid); 1044 } 1045 } 1046 NetworkState state = getFilteredNetworkState(networkType, uid); 1047 return state.networkInfo; 1048 } 1049 1050 @Override 1051 public NetworkInfo getNetworkInfoForNetwork(Network network) { 1052 enforceAccessPermission(); 1053 final int uid = Binder.getCallingUid(); 1054 NetworkInfo info = null; 1055 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1056 if (nai != null) { 1057 synchronized (nai) { 1058 info = new NetworkInfo(nai.networkInfo); 1059 info = getFilteredNetworkInfo(info, nai.linkProperties, uid); 1060 } 1061 } 1062 return info; 1063 } 1064 1065 @Override 1066 public NetworkInfo[] getAllNetworkInfo() { 1067 enforceAccessPermission(); 1068 final ArrayList<NetworkInfo> result = Lists.newArrayList(); 1069 for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; 1070 networkType++) { 1071 NetworkInfo info = getNetworkInfo(networkType); 1072 if (info != null) { 1073 result.add(info); 1074 } 1075 } 1076 return result.toArray(new NetworkInfo[result.size()]); 1077 } 1078 1079 @Override 1080 public Network getNetworkForType(int networkType) { 1081 enforceAccessPermission(); 1082 final int uid = Binder.getCallingUid(); 1083 NetworkState state = getFilteredNetworkState(networkType, uid); 1084 if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) { 1085 return state.network; 1086 } 1087 return null; 1088 } 1089 1090 @Override 1091 public Network[] getAllNetworks() { 1092 enforceAccessPermission(); 1093 synchronized (mNetworkForNetId) { 1094 final Network[] result = new Network[mNetworkForNetId.size()]; 1095 for (int i = 0; i < mNetworkForNetId.size(); i++) { 1096 result[i] = mNetworkForNetId.valueAt(i).network; 1097 } 1098 return result; 1099 } 1100 } 1101 1102 @Override 1103 public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { 1104 // The basic principle is: if an app's traffic could possibly go over a 1105 // network, without the app doing anything multinetwork-specific, 1106 // (hence, by "default"), then include that network's capabilities in 1107 // the array. 1108 // 1109 // In the normal case, app traffic only goes over the system's default 1110 // network connection, so that's the only network returned. 1111 // 1112 // With a VPN in force, some app traffic may go into the VPN, and thus 1113 // over whatever underlying networks the VPN specifies, while other app 1114 // traffic may go over the system default network (e.g.: a split-tunnel 1115 // VPN, or an app disallowed by the VPN), so the set of networks 1116 // returned includes the VPN's underlying networks and the system 1117 // default. 1118 enforceAccessPermission(); 1119 1120 HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>(); 1121 1122 NetworkAgentInfo nai = getDefaultNetwork(); 1123 NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); 1124 if (nc != null) { 1125 result.put(nai.network, nc); 1126 } 1127 1128 if (!mLockdownEnabled) { 1129 synchronized (mVpns) { 1130 Vpn vpn = mVpns.get(userId); 1131 if (vpn != null) { 1132 Network[] networks = vpn.getUnderlyingNetworks(); 1133 if (networks != null) { 1134 for (Network network : networks) { 1135 nai = getNetworkAgentInfoForNetwork(network); 1136 nc = getNetworkCapabilitiesInternal(nai); 1137 if (nc != null) { 1138 result.put(network, nc); 1139 } 1140 } 1141 } 1142 } 1143 } 1144 } 1145 1146 NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; 1147 out = result.values().toArray(out); 1148 return out; 1149 } 1150 1151 @Override 1152 public boolean isNetworkSupported(int networkType) { 1153 enforceAccessPermission(); 1154 return mLegacyTypeTracker.isTypeSupported(networkType); 1155 } 1156 1157 /** 1158 * Return LinkProperties for the active (i.e., connected) default 1159 * network interface. It is assumed that at most one default network 1160 * is active at a time. If more than one is active, it is indeterminate 1161 * which will be returned. 1162 * @return the ip properties for the active network, or {@code null} if 1163 * none is active 1164 */ 1165 @Override 1166 public LinkProperties getActiveLinkProperties() { 1167 enforceAccessPermission(); 1168 final int uid = Binder.getCallingUid(); 1169 NetworkState state = getUnfilteredActiveNetworkState(uid); 1170 return state.linkProperties; 1171 } 1172 1173 @Override 1174 public LinkProperties getLinkPropertiesForType(int networkType) { 1175 enforceAccessPermission(); 1176 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1177 if (nai != null) { 1178 synchronized (nai) { 1179 return new LinkProperties(nai.linkProperties); 1180 } 1181 } 1182 return null; 1183 } 1184 1185 // TODO - this should be ALL networks 1186 @Override 1187 public LinkProperties getLinkProperties(Network network) { 1188 enforceAccessPermission(); 1189 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1190 if (nai != null) { 1191 synchronized (nai) { 1192 return new LinkProperties(nai.linkProperties); 1193 } 1194 } 1195 return null; 1196 } 1197 1198 private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { 1199 if (nai != null) { 1200 synchronized (nai) { 1201 if (nai.networkCapabilities != null) { 1202 return new NetworkCapabilities(nai.networkCapabilities); 1203 } 1204 } 1205 } 1206 return null; 1207 } 1208 1209 @Override 1210 public NetworkCapabilities getNetworkCapabilities(Network network) { 1211 enforceAccessPermission(); 1212 return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); 1213 } 1214 1215 @Override 1216 public NetworkState[] getAllNetworkState() { 1217 // Require internal since we're handing out IMSI details 1218 enforceConnectivityInternalPermission(); 1219 1220 final ArrayList<NetworkState> result = Lists.newArrayList(); 1221 for (Network network : getAllNetworks()) { 1222 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 1223 if (nai != null) { 1224 synchronized (nai) { 1225 final String subscriberId = (nai.networkMisc != null) 1226 ? nai.networkMisc.subscriberId : null; 1227 result.add(new NetworkState(nai.networkInfo, nai.linkProperties, 1228 nai.networkCapabilities, network, subscriberId, null)); 1229 } 1230 } 1231 } 1232 return result.toArray(new NetworkState[result.size()]); 1233 } 1234 1235 @Override 1236 public NetworkQuotaInfo getActiveNetworkQuotaInfo() { 1237 enforceAccessPermission(); 1238 final int uid = Binder.getCallingUid(); 1239 final long token = Binder.clearCallingIdentity(); 1240 try { 1241 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1242 if (state.networkInfo != null) { 1243 try { 1244 return mPolicyManager.getNetworkQuotaInfo(state); 1245 } catch (RemoteException e) { 1246 } 1247 } 1248 return null; 1249 } finally { 1250 Binder.restoreCallingIdentity(token); 1251 } 1252 } 1253 1254 @Override 1255 public boolean isActiveNetworkMetered() { 1256 enforceAccessPermission(); 1257 final int uid = Binder.getCallingUid(); 1258 final long token = Binder.clearCallingIdentity(); 1259 try { 1260 return isActiveNetworkMeteredUnchecked(uid); 1261 } finally { 1262 Binder.restoreCallingIdentity(token); 1263 } 1264 } 1265 1266 private boolean isActiveNetworkMeteredUnchecked(int uid) { 1267 final NetworkState state = getUnfilteredActiveNetworkState(uid); 1268 if (state.networkInfo != null) { 1269 try { 1270 return mPolicyManager.isNetworkMetered(state); 1271 } catch (RemoteException e) { 1272 } 1273 } 1274 return false; 1275 } 1276 1277 private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { 1278 @Override 1279 public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { 1280 int deviceType = Integer.parseInt(label); 1281 sendDataActivityBroadcast(deviceType, active, tsNanos); 1282 } 1283 }; 1284 1285 /** 1286 * Ensure that a network route exists to deliver traffic to the specified 1287 * host via the specified network interface. 1288 * @param networkType the type of the network over which traffic to the 1289 * specified host is to be routed 1290 * @param hostAddress the IP address of the host to which the route is 1291 * desired 1292 * @return {@code true} on success, {@code false} on failure 1293 */ 1294 public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { 1295 enforceChangePermission(); 1296 if (mProtectedNetworks.contains(networkType)) { 1297 enforceConnectivityInternalPermission(); 1298 } 1299 1300 InetAddress addr; 1301 try { 1302 addr = InetAddress.getByAddress(hostAddress); 1303 } catch (UnknownHostException e) { 1304 if (DBG) log("requestRouteToHostAddress got " + e.toString()); 1305 return false; 1306 } 1307 1308 if (!ConnectivityManager.isNetworkTypeValid(networkType)) { 1309 if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); 1310 return false; 1311 } 1312 1313 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 1314 if (nai == null) { 1315 if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { 1316 if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); 1317 } else { 1318 if (DBG) log("requestRouteToHostAddress on down network: " + networkType); 1319 } 1320 return false; 1321 } 1322 1323 DetailedState netState; 1324 synchronized (nai) { 1325 netState = nai.networkInfo.getDetailedState(); 1326 } 1327 1328 if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { 1329 if (VDBG) { 1330 log("requestRouteToHostAddress on down network " 1331 + "(" + networkType + ") - dropped" 1332 + " netState=" + netState); 1333 } 1334 return false; 1335 } 1336 1337 final int uid = Binder.getCallingUid(); 1338 final long token = Binder.clearCallingIdentity(); 1339 try { 1340 LinkProperties lp; 1341 int netId; 1342 synchronized (nai) { 1343 lp = nai.linkProperties; 1344 netId = nai.network.netId; 1345 } 1346 boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); 1347 if (DBG) log("requestRouteToHostAddress ok=" + ok); 1348 return ok; 1349 } finally { 1350 Binder.restoreCallingIdentity(token); 1351 } 1352 } 1353 1354 private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { 1355 RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); 1356 if (bestRoute == null) { 1357 bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); 1358 } else { 1359 String iface = bestRoute.getInterface(); 1360 if (bestRoute.getGateway().equals(addr)) { 1361 // if there is no better route, add the implied hostroute for our gateway 1362 bestRoute = RouteInfo.makeHostRoute(addr, iface); 1363 } else { 1364 // if we will connect to this through another route, add a direct route 1365 // to it's gateway 1366 bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); 1367 } 1368 } 1369 if (DBG) log("Adding legacy route " + bestRoute + 1370 " for UID/PID " + uid + "/" + Binder.getCallingPid()); 1371 try { 1372 mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); 1373 } catch (Exception e) { 1374 // never crash - catch them all 1375 if (DBG) loge("Exception trying to add a route: " + e); 1376 return false; 1377 } 1378 return true; 1379 } 1380 1381 private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { 1382 @Override 1383 public void onUidRulesChanged(int uid, int uidRules) { 1384 // caller is NPMS, since we only register with them 1385 if (LOGD_RULES) { 1386 log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); 1387 } 1388 1389 synchronized (mRulesLock) { 1390 // skip update when we've already applied rules 1391 final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); 1392 if (oldRules == uidRules) return; 1393 1394 mUidRules.put(uid, uidRules); 1395 } 1396 1397 // TODO: notify UID when it has requested targeted updates 1398 } 1399 1400 @Override 1401 public void onMeteredIfacesChanged(String[] meteredIfaces) { 1402 // caller is NPMS, since we only register with them 1403 if (LOGD_RULES) { 1404 log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); 1405 } 1406 1407 synchronized (mRulesLock) { 1408 mMeteredIfaces.clear(); 1409 for (String iface : meteredIfaces) { 1410 mMeteredIfaces.add(iface); 1411 } 1412 } 1413 } 1414 1415 @Override 1416 public void onRestrictBackgroundChanged(boolean restrictBackground) { 1417 // caller is NPMS, since we only register with them 1418 if (LOGD_RULES) { 1419 log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); 1420 } 1421 } 1422 }; 1423 1424 /** 1425 * Require that the caller is either in the same user or has appropriate permission to interact 1426 * across users. 1427 * 1428 * @param userId Target user for whatever operation the current IPC is supposed to perform. 1429 */ 1430 private void enforceCrossUserPermission(int userId) { 1431 if (userId == UserHandle.getCallingUserId()) { 1432 // Not a cross-user call. 1433 return; 1434 } 1435 mContext.enforceCallingOrSelfPermission( 1436 android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, 1437 "ConnectivityService"); 1438 } 1439 1440 private void enforceInternetPermission() { 1441 mContext.enforceCallingOrSelfPermission( 1442 android.Manifest.permission.INTERNET, 1443 "ConnectivityService"); 1444 } 1445 1446 private void enforceAccessPermission() { 1447 mContext.enforceCallingOrSelfPermission( 1448 android.Manifest.permission.ACCESS_NETWORK_STATE, 1449 "ConnectivityService"); 1450 } 1451 1452 private void enforceChangePermission() { 1453 ConnectivityManager.enforceChangePermission(mContext); 1454 } 1455 1456 private void enforceTetherAccessPermission() { 1457 mContext.enforceCallingOrSelfPermission( 1458 android.Manifest.permission.ACCESS_NETWORK_STATE, 1459 "ConnectivityService"); 1460 } 1461 1462 private void enforceConnectivityInternalPermission() { 1463 mContext.enforceCallingOrSelfPermission( 1464 android.Manifest.permission.CONNECTIVITY_INTERNAL, 1465 "ConnectivityService"); 1466 } 1467 1468 private void enforceKeepalivePermission() { 1469 mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); 1470 } 1471 1472 public void sendConnectedBroadcast(NetworkInfo info) { 1473 enforceConnectivityInternalPermission(); 1474 sendGeneralBroadcast(info, CONNECTIVITY_ACTION); 1475 } 1476 1477 private void sendInetConditionBroadcast(NetworkInfo info) { 1478 sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); 1479 } 1480 1481 private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { 1482 if (mLockdownTracker != null) { 1483 info = mLockdownTracker.augmentNetworkInfo(info); 1484 } 1485 1486 Intent intent = new Intent(bcastType); 1487 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); 1488 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 1489 if (info.isFailover()) { 1490 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 1491 info.setFailover(false); 1492 } 1493 if (info.getReason() != null) { 1494 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 1495 } 1496 if (info.getExtraInfo() != null) { 1497 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, 1498 info.getExtraInfo()); 1499 } 1500 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); 1501 return intent; 1502 } 1503 1504 private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { 1505 sendStickyBroadcast(makeGeneralIntent(info, bcastType)); 1506 } 1507 1508 private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { 1509 Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); 1510 intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); 1511 intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); 1512 intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); 1513 final long ident = Binder.clearCallingIdentity(); 1514 try { 1515 mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, 1516 RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); 1517 } finally { 1518 Binder.restoreCallingIdentity(ident); 1519 } 1520 } 1521 1522 private void sendStickyBroadcast(Intent intent) { 1523 synchronized(this) { 1524 if (!mSystemReady) { 1525 mInitialBroadcast = new Intent(intent); 1526 } 1527 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1528 if (VDBG) { 1529 log("sendStickyBroadcast: action=" + intent.getAction()); 1530 } 1531 1532 Bundle options = null; 1533 final long ident = Binder.clearCallingIdentity(); 1534 if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { 1535 final NetworkInfo ni = intent.getParcelableExtra( 1536 ConnectivityManager.EXTRA_NETWORK_INFO); 1537 if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { 1538 intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); 1539 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); 1540 } else { 1541 BroadcastOptions opts = BroadcastOptions.makeBasic(); 1542 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); 1543 options = opts.toBundle(); 1544 } 1545 final IBatteryStats bs = BatteryStatsService.getService(); 1546 try { 1547 bs.noteConnectivityChanged(intent.getIntExtra( 1548 ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), 1549 ni != null ? ni.getState().toString() : "?"); 1550 } catch (RemoteException e) { 1551 } 1552 } 1553 try { 1554 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); 1555 } finally { 1556 Binder.restoreCallingIdentity(ident); 1557 } 1558 } 1559 } 1560 1561 void systemReady() { 1562 loadGlobalProxy(); 1563 1564 synchronized(this) { 1565 mSystemReady = true; 1566 if (mInitialBroadcast != null) { 1567 mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); 1568 mInitialBroadcast = null; 1569 } 1570 } 1571 // load the global proxy at startup 1572 mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); 1573 1574 // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait 1575 // for user to unlock device too. 1576 updateLockdownVpn(); 1577 1578 // Configure whether mobile data is always on. 1579 mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON)); 1580 1581 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); 1582 1583 mPermissionMonitor.startMonitoring(); 1584 } 1585 1586 /** 1587 * Setup data activity tracking for the given network. 1588 * 1589 * Every {@code setupDataActivityTracking} should be paired with a 1590 * {@link #removeDataActivityTracking} for cleanup. 1591 */ 1592 private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { 1593 final String iface = networkAgent.linkProperties.getInterfaceName(); 1594 1595 final int timeout; 1596 int type = ConnectivityManager.TYPE_NONE; 1597 1598 if (networkAgent.networkCapabilities.hasTransport( 1599 NetworkCapabilities.TRANSPORT_CELLULAR)) { 1600 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1601 Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 1602 10); 1603 type = ConnectivityManager.TYPE_MOBILE; 1604 } else if (networkAgent.networkCapabilities.hasTransport( 1605 NetworkCapabilities.TRANSPORT_WIFI)) { 1606 timeout = Settings.Global.getInt(mContext.getContentResolver(), 1607 Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 1608 15); 1609 type = ConnectivityManager.TYPE_WIFI; 1610 } else { 1611 // do not track any other networks 1612 timeout = 0; 1613 } 1614 1615 if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { 1616 try { 1617 mNetd.addIdleTimer(iface, timeout, type); 1618 } catch (Exception e) { 1619 // You shall not crash! 1620 loge("Exception in setupDataActivityTracking " + e); 1621 } 1622 } 1623 } 1624 1625 /** 1626 * Remove data activity tracking when network disconnects. 1627 */ 1628 private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { 1629 final String iface = networkAgent.linkProperties.getInterfaceName(); 1630 final NetworkCapabilities caps = networkAgent.networkCapabilities; 1631 1632 if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || 1633 caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { 1634 try { 1635 // the call fails silently if no idletimer setup for this interface 1636 mNetd.removeIdleTimer(iface); 1637 } catch (Exception e) { 1638 loge("Exception in removeDataActivityTracking " + e); 1639 } 1640 } 1641 } 1642 1643 /** 1644 * Reads the network specific MTU size from reources. 1645 * and set it on it's iface. 1646 */ 1647 private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { 1648 final String iface = newLp.getInterfaceName(); 1649 final int mtu = newLp.getMtu(); 1650 if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { 1651 if (VDBG) log("identical MTU - not setting"); 1652 return; 1653 } 1654 1655 if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { 1656 if (mtu != 0) loge("Unexpected mtu value: " + mtu + ", " + iface); 1657 return; 1658 } 1659 1660 // Cannot set MTU without interface name 1661 if (TextUtils.isEmpty(iface)) { 1662 loge("Setting MTU size with null iface."); 1663 return; 1664 } 1665 1666 try { 1667 if (VDBG) log("Setting MTU size: " + iface + ", " + mtu); 1668 mNetd.setMtu(iface, mtu); 1669 } catch (Exception e) { 1670 Slog.e(TAG, "exception in setMtu()" + e); 1671 } 1672 } 1673 1674 private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; 1675 private static final String DEFAULT_TCP_RWND_KEY = "net.tcp.default_init_rwnd"; 1676 1677 // Overridden for testing purposes to avoid writing to SystemProperties. 1678 @VisibleForTesting 1679 protected int getDefaultTcpRwnd() { 1680 return SystemProperties.getInt(DEFAULT_TCP_RWND_KEY, 0); 1681 } 1682 1683 private void updateTcpBufferSizes(NetworkAgentInfo nai) { 1684 if (isDefaultNetwork(nai) == false) { 1685 return; 1686 } 1687 1688 String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); 1689 String[] values = null; 1690 if (tcpBufferSizes != null) { 1691 values = tcpBufferSizes.split(","); 1692 } 1693 1694 if (values == null || values.length != 6) { 1695 if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); 1696 tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; 1697 values = tcpBufferSizes.split(","); 1698 } 1699 1700 if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; 1701 1702 try { 1703 if (VDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); 1704 1705 final String prefix = "/sys/kernel/ipv4/tcp_"; 1706 FileUtils.stringToFile(prefix + "rmem_min", values[0]); 1707 FileUtils.stringToFile(prefix + "rmem_def", values[1]); 1708 FileUtils.stringToFile(prefix + "rmem_max", values[2]); 1709 FileUtils.stringToFile(prefix + "wmem_min", values[3]); 1710 FileUtils.stringToFile(prefix + "wmem_def", values[4]); 1711 FileUtils.stringToFile(prefix + "wmem_max", values[5]); 1712 mCurrentTcpBufferSizes = tcpBufferSizes; 1713 } catch (IOException e) { 1714 loge("Can't set TCP buffer sizes:" + e); 1715 } 1716 1717 Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), 1718 Settings.Global.TCP_DEFAULT_INIT_RWND, getDefaultTcpRwnd()); 1719 final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; 1720 if (rwndValue != 0) { 1721 SystemProperties.set(sysctlKey, rwndValue.toString()); 1722 } 1723 } 1724 1725 private void flushVmDnsCache() { 1726 /* 1727 * Tell the VMs to toss their DNS caches 1728 */ 1729 Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); 1730 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); 1731 /* 1732 * Connectivity events can happen before boot has completed ... 1733 */ 1734 intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 1735 final long ident = Binder.clearCallingIdentity(); 1736 try { 1737 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 1738 } finally { 1739 Binder.restoreCallingIdentity(ident); 1740 } 1741 } 1742 1743 @Override 1744 public int getRestoreDefaultNetworkDelay(int networkType) { 1745 String restoreDefaultNetworkDelayStr = SystemProperties.get( 1746 NETWORK_RESTORE_DELAY_PROP_NAME); 1747 if(restoreDefaultNetworkDelayStr != null && 1748 restoreDefaultNetworkDelayStr.length() != 0) { 1749 try { 1750 return Integer.valueOf(restoreDefaultNetworkDelayStr); 1751 } catch (NumberFormatException e) { 1752 } 1753 } 1754 // if the system property isn't set, use the value for the apn type 1755 int ret = RESTORE_DEFAULT_NETWORK_DELAY; 1756 1757 if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && 1758 (mNetConfigs[networkType] != null)) { 1759 ret = mNetConfigs[networkType].restoreTime; 1760 } 1761 return ret; 1762 } 1763 1764 private boolean argsContain(String[] args, String target) { 1765 for (String arg : args) { 1766 if (arg.equals(target)) return true; 1767 } 1768 return false; 1769 } 1770 1771 private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { 1772 final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); 1773 final long DIAG_TIME_MS = 5000; 1774 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1775 // Start gathering diagnostic information. 1776 netDiags.add(new NetworkDiagnostics( 1777 nai.network, 1778 new LinkProperties(nai.linkProperties), // Must be a copy. 1779 DIAG_TIME_MS)); 1780 } 1781 1782 for (NetworkDiagnostics netDiag : netDiags) { 1783 pw.println(); 1784 netDiag.waitForMeasurements(); 1785 netDiag.dump(pw); 1786 } 1787 } 1788 1789 @Override 1790 protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { 1791 final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); 1792 if (mContext.checkCallingOrSelfPermission( 1793 android.Manifest.permission.DUMP) 1794 != PackageManager.PERMISSION_GRANTED) { 1795 pw.println("Permission Denial: can't dump ConnectivityService " + 1796 "from from pid=" + Binder.getCallingPid() + ", uid=" + 1797 Binder.getCallingUid()); 1798 return; 1799 } 1800 1801 if (argsContain(args, "--diag")) { 1802 dumpNetworkDiagnostics(pw); 1803 return; 1804 } 1805 1806 pw.print("NetworkFactories for:"); 1807 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 1808 pw.print(" " + nfi.name); 1809 } 1810 pw.println(); 1811 pw.println(); 1812 1813 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 1814 pw.print("Active default network: "); 1815 if (defaultNai == null) { 1816 pw.println("none"); 1817 } else { 1818 pw.println(defaultNai.network.netId); 1819 } 1820 pw.println(); 1821 1822 pw.println("Current Networks:"); 1823 pw.increaseIndent(); 1824 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 1825 pw.println(nai.toString()); 1826 pw.increaseIndent(); 1827 pw.println("Requests:"); 1828 pw.increaseIndent(); 1829 for (int i = 0; i < nai.networkRequests.size(); i++) { 1830 pw.println(nai.networkRequests.valueAt(i).toString()); 1831 } 1832 pw.decreaseIndent(); 1833 pw.println("Lingered:"); 1834 pw.increaseIndent(); 1835 for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); 1836 pw.decreaseIndent(); 1837 pw.decreaseIndent(); 1838 } 1839 pw.decreaseIndent(); 1840 pw.println(); 1841 1842 pw.println("Network Requests:"); 1843 pw.increaseIndent(); 1844 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 1845 pw.println(nri.toString()); 1846 } 1847 pw.println(); 1848 pw.decreaseIndent(); 1849 1850 mLegacyTypeTracker.dump(pw); 1851 1852 synchronized (this) { 1853 pw.print("mNetTransitionWakeLock: currently " + 1854 (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held"); 1855 if (!TextUtils.isEmpty(mNetTransitionWakeLockCausedBy)) { 1856 pw.println(", last requested for " + mNetTransitionWakeLockCausedBy); 1857 } else { 1858 pw.println(", last requested never"); 1859 } 1860 } 1861 1862 pw.println(); 1863 mTethering.dump(fd, pw, args); 1864 1865 pw.println(); 1866 mKeepaliveTracker.dump(pw); 1867 1868 pw.println(); 1869 1870 if (mInetLog != null && mInetLog.size() > 0) { 1871 pw.println(); 1872 pw.println("Inet condition reports:"); 1873 pw.increaseIndent(); 1874 for(int i = 0; i < mInetLog.size(); i++) { 1875 pw.println(mInetLog.get(i)); 1876 } 1877 pw.decreaseIndent(); 1878 } 1879 1880 if (argsContain(args, "--short") == false) { 1881 pw.println(); 1882 synchronized (mValidationLogs) { 1883 pw.println("mValidationLogs (most recent first):"); 1884 for (Pair<Network,ReadOnlyLocalLog> p : mValidationLogs) { 1885 pw.println(p.first); 1886 pw.increaseIndent(); 1887 p.second.dump(fd, pw, args); 1888 pw.decreaseIndent(); 1889 } 1890 } 1891 1892 pw.println(); 1893 pw.println("mNetworkRequestInfoLogs (most recent first):"); 1894 pw.increaseIndent(); 1895 mNetworkRequestInfoLogs.reverseDump(fd, pw, args); 1896 pw.decreaseIndent(); 1897 } 1898 } 1899 1900 private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { 1901 if (nai.network == null) return false; 1902 final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); 1903 if (officialNai != null && officialNai.equals(nai)) return true; 1904 if (officialNai != null || VDBG) { 1905 final String msg = sMagicDecoderRing.get(what, Integer.toString(what)); 1906 loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + 1907 " - " + nai); 1908 } 1909 return false; 1910 } 1911 1912 private boolean isRequest(NetworkRequest request) { 1913 return mNetworkRequests.get(request).isRequest(); 1914 } 1915 1916 // must be stateless - things change under us. 1917 private class NetworkStateTrackerHandler extends Handler { 1918 public NetworkStateTrackerHandler(Looper looper) { 1919 super(looper); 1920 } 1921 1922 private boolean maybeHandleAsyncChannelMessage(Message msg) { 1923 switch (msg.what) { 1924 default: 1925 return false; 1926 case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { 1927 handleAsyncChannelHalfConnect(msg); 1928 break; 1929 } 1930 case AsyncChannel.CMD_CHANNEL_DISCONNECT: { 1931 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1932 if (nai != null) nai.asyncChannel.disconnect(); 1933 break; 1934 } 1935 case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { 1936 handleAsyncChannelDisconnected(msg); 1937 break; 1938 } 1939 } 1940 return true; 1941 } 1942 1943 private void maybeHandleNetworkAgentMessage(Message msg) { 1944 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 1945 if (nai == null) { 1946 if (VDBG) { 1947 final String what = sMagicDecoderRing.get(msg.what, Integer.toString(msg.what)); 1948 log(String.format("%s from unknown NetworkAgent", what)); 1949 } 1950 return; 1951 } 1952 1953 switch (msg.what) { 1954 case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { 1955 final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; 1956 if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) || 1957 networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) { 1958 Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); 1959 } 1960 if (nai.created && !nai.networkCapabilities.equalImmutableCapabilities( 1961 networkCapabilities)) { 1962 Slog.wtf(TAG, "BUG: " + nai + " changed immutable capabilities: " 1963 + nai.networkCapabilities + " -> " + networkCapabilities); 1964 } 1965 updateCapabilities(nai, networkCapabilities); 1966 break; 1967 } 1968 case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { 1969 if (VDBG) { 1970 log("Update of LinkProperties for " + nai.name() + 1971 "; created=" + nai.created); 1972 } 1973 LinkProperties oldLp = nai.linkProperties; 1974 synchronized (nai) { 1975 nai.linkProperties = (LinkProperties)msg.obj; 1976 } 1977 if (nai.created) updateLinkProperties(nai, oldLp); 1978 break; 1979 } 1980 case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { 1981 NetworkInfo info = (NetworkInfo) msg.obj; 1982 updateNetworkInfo(nai, info); 1983 break; 1984 } 1985 case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { 1986 Integer score = (Integer) msg.obj; 1987 if (score != null) updateNetworkScore(nai, score.intValue()); 1988 break; 1989 } 1990 case NetworkAgent.EVENT_UID_RANGES_ADDED: { 1991 try { 1992 mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 1993 } catch (Exception e) { 1994 // Never crash! 1995 loge("Exception in addVpnUidRanges: " + e); 1996 } 1997 break; 1998 } 1999 case NetworkAgent.EVENT_UID_RANGES_REMOVED: { 2000 try { 2001 mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); 2002 } catch (Exception e) { 2003 // Never crash! 2004 loge("Exception in removeVpnUidRanges: " + e); 2005 } 2006 break; 2007 } 2008 case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { 2009 if (nai.created && !nai.networkMisc.explicitlySelected) { 2010 loge("ERROR: created network explicitly selected."); 2011 } 2012 nai.networkMisc.explicitlySelected = true; 2013 nai.networkMisc.acceptUnvalidated = (boolean) msg.obj; 2014 break; 2015 } 2016 case NetworkAgent.EVENT_PACKET_KEEPALIVE: { 2017 mKeepaliveTracker.handleEventPacketKeepalive(nai, msg); 2018 break; 2019 } 2020 } 2021 } 2022 2023 private boolean maybeHandleNetworkMonitorMessage(Message msg) { 2024 switch (msg.what) { 2025 default: 2026 return false; 2027 case NetworkMonitor.EVENT_NETWORK_TESTED: { 2028 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2029 if (isLiveNetworkAgent(nai, msg.what)) { 2030 final boolean valid = 2031 (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); 2032 if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed")); 2033 if (valid != nai.lastValidated) { 2034 final int oldScore = nai.getCurrentScore(); 2035 nai.lastValidated = valid; 2036 nai.everValidated |= valid; 2037 updateCapabilities(nai, nai.networkCapabilities); 2038 // If score has changed, rebroadcast to NetworkFactories. b/17726566 2039 if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); 2040 } 2041 updateInetCondition(nai); 2042 // Let the NetworkAgent know the state of its network 2043 nai.asyncChannel.sendMessage( 2044 android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, 2045 (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 2046 0, null); 2047 } 2048 break; 2049 } 2050 case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { 2051 NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; 2052 if (isLiveNetworkAgent(nai, msg.what)) { 2053 handleLingerComplete(nai); 2054 } 2055 break; 2056 } 2057 case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { 2058 final int netId = msg.arg2; 2059 final boolean visible = (msg.arg1 != 0); 2060 final NetworkAgentInfo nai; 2061 synchronized (mNetworkForNetId) { 2062 nai = mNetworkForNetId.get(netId); 2063 } 2064 // If captive portal status has changed, update capabilities. 2065 if (nai != null && (visible != nai.lastCaptivePortalDetected)) { 2066 nai.lastCaptivePortalDetected = visible; 2067 nai.everCaptivePortalDetected |= visible; 2068 updateCapabilities(nai, nai.networkCapabilities); 2069 } 2070 if (!visible) { 2071 setProvNotificationVisibleIntent(false, netId, null, 0, null, null, false); 2072 } else { 2073 if (nai == null) { 2074 loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); 2075 break; 2076 } 2077 setProvNotificationVisibleIntent(true, netId, NotificationType.SIGN_IN, 2078 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), 2079 (PendingIntent)msg.obj, nai.networkMisc.explicitlySelected); 2080 } 2081 break; 2082 } 2083 } 2084 return true; 2085 } 2086 2087 @Override 2088 public void handleMessage(Message msg) { 2089 if (!maybeHandleAsyncChannelMessage(msg) && !maybeHandleNetworkMonitorMessage(msg)) { 2090 maybeHandleNetworkAgentMessage(msg); 2091 } 2092 } 2093 } 2094 2095 private void linger(NetworkAgentInfo nai) { 2096 nai.lingering = true; 2097 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); 2098 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); 2099 } 2100 2101 // Cancel any lingering so the linger timeout doesn't teardown a network. 2102 // This should be called when a network begins satisfying a NetworkRequest. 2103 // Note: depending on what state the NetworkMonitor is in (e.g., 2104 // if it's awaiting captive portal login, or if validation failed), this 2105 // may trigger a re-evaluation of the network. 2106 private void unlinger(NetworkAgentInfo nai) { 2107 nai.networkLingered.clear(); 2108 if (!nai.lingering) return; 2109 nai.lingering = false; 2110 if (VDBG) log("Canceling linger of " + nai.name()); 2111 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 2112 } 2113 2114 private void handleAsyncChannelHalfConnect(Message msg) { 2115 AsyncChannel ac = (AsyncChannel) msg.obj; 2116 if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { 2117 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2118 if (VDBG) log("NetworkFactory connected"); 2119 // A network factory has connected. Send it all current NetworkRequests. 2120 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2121 if (!nri.isRequest()) continue; 2122 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2123 ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, 2124 (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); 2125 } 2126 } else { 2127 loge("Error connecting NetworkFactory"); 2128 mNetworkFactoryInfos.remove(msg.obj); 2129 } 2130 } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { 2131 if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { 2132 if (VDBG) log("NetworkAgent connected"); 2133 // A network agent has requested a connection. Establish the connection. 2134 mNetworkAgentInfos.get(msg.replyTo).asyncChannel. 2135 sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); 2136 } else { 2137 loge("Error connecting NetworkAgent"); 2138 NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); 2139 if (nai != null) { 2140 final boolean wasDefault = isDefaultNetwork(nai); 2141 synchronized (mNetworkForNetId) { 2142 mNetworkForNetId.remove(nai.network.netId); 2143 mNetIdInUse.delete(nai.network.netId); 2144 } 2145 // Just in case. 2146 mLegacyTypeTracker.remove(nai, wasDefault); 2147 } 2148 } 2149 } 2150 } 2151 2152 private void handleAsyncChannelDisconnected(Message msg) { 2153 NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); 2154 if (nai != null) { 2155 if (DBG) { 2156 log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); 2157 } 2158 // A network agent has disconnected. 2159 // TODO - if we move the logic to the network agent (have them disconnect 2160 // because they lost all their requests or because their score isn't good) 2161 // then they would disconnect organically, report their new state and then 2162 // disconnect the channel. 2163 if (nai.networkInfo.isConnected()) { 2164 nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, 2165 null, null); 2166 } 2167 final boolean wasDefault = isDefaultNetwork(nai); 2168 if (wasDefault) { 2169 mDefaultInetConditionPublished = 0; 2170 } 2171 notifyIfacesChangedForNetworkStats(); 2172 // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied 2173 // by other networks that are already connected. Perhaps that can be done by 2174 // sending all CALLBACK_LOST messages (for requests, not listens) at the end 2175 // of rematchAllNetworksAndRequests 2176 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); 2177 mKeepaliveTracker.handleStopAllKeepalives(nai, 2178 ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK); 2179 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); 2180 mNetworkAgentInfos.remove(msg.replyTo); 2181 updateClat(null, nai.linkProperties, nai); 2182 synchronized (mNetworkForNetId) { 2183 // Remove the NetworkAgent, but don't mark the netId as 2184 // available until we've told netd to delete it below. 2185 mNetworkForNetId.remove(nai.network.netId); 2186 } 2187 // Remove all previously satisfied requests. 2188 for (int i = 0; i < nai.networkRequests.size(); i++) { 2189 NetworkRequest request = nai.networkRequests.valueAt(i); 2190 NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); 2191 if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { 2192 mNetworkForRequestId.remove(request.requestId); 2193 sendUpdatedScoreToFactories(request, 0); 2194 } 2195 } 2196 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 2197 removeDataActivityTracking(nai); 2198 notifyLockdownVpn(nai); 2199 requestNetworkTransitionWakelock(nai.name()); 2200 } 2201 mLegacyTypeTracker.remove(nai, wasDefault); 2202 rematchAllNetworksAndRequests(null, 0); 2203 if (nai.created) { 2204 // Tell netd to clean up the configuration for this network 2205 // (routing rules, DNS, etc). 2206 // This may be slow as it requires a lot of netd shelling out to ip and 2207 // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it 2208 // after we've rematched networks with requests which should make a potential 2209 // fallback network the default or requested a new network from the 2210 // NetworkFactories, so network traffic isn't interrupted for an unnecessarily 2211 // long time. 2212 try { 2213 mNetd.removeNetwork(nai.network.netId); 2214 } catch (Exception e) { 2215 loge("Exception removing network: " + e); 2216 } 2217 } 2218 synchronized (mNetworkForNetId) { 2219 mNetIdInUse.delete(nai.network.netId); 2220 } 2221 } else { 2222 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(msg.replyTo); 2223 if (DBG && nfi != null) log("unregisterNetworkFactory for " + nfi.name); 2224 } 2225 } 2226 2227 // If this method proves to be too slow then we can maintain a separate 2228 // pendingIntent => NetworkRequestInfo map. 2229 // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. 2230 private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { 2231 Intent intent = pendingIntent.getIntent(); 2232 for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { 2233 PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; 2234 if (existingPendingIntent != null && 2235 existingPendingIntent.getIntent().filterEquals(intent)) { 2236 return entry.getValue(); 2237 } 2238 } 2239 return null; 2240 } 2241 2242 private void handleRegisterNetworkRequestWithIntent(Message msg) { 2243 final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); 2244 2245 NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); 2246 if (existingRequest != null) { // remove the existing request. 2247 if (DBG) log("Replacing " + existingRequest.request + " with " 2248 + nri.request + " because their intents matched."); 2249 handleReleaseNetworkRequest(existingRequest.request, getCallingUid()); 2250 } 2251 handleRegisterNetworkRequest(nri); 2252 } 2253 2254 private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { 2255 mNetworkRequests.put(nri.request, nri); 2256 mNetworkRequestInfoLogs.log("REGISTER " + nri); 2257 if (!nri.isRequest()) { 2258 for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { 2259 if (nri.request.networkCapabilities.hasSignalStrength() && 2260 network.satisfiesImmutableCapabilitiesOf(nri.request)) { 2261 updateSignalStrengthThresholds(network, "REGISTER", nri.request); 2262 } 2263 } 2264 } 2265 rematchAllNetworksAndRequests(null, 0); 2266 if (nri.isRequest() && mNetworkForRequestId.get(nri.request.requestId) == null) { 2267 sendUpdatedScoreToFactories(nri.request, 0); 2268 } 2269 } 2270 2271 private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, 2272 int callingUid) { 2273 NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); 2274 if (nri != null) { 2275 handleReleaseNetworkRequest(nri.request, callingUid); 2276 } 2277 } 2278 2279 // Is nai unneeded by all NetworkRequests (and should be disconnected)? 2280 // This is whether it is satisfying any NetworkRequests or were it to become validated, 2281 // would it have a chance of satisfying any NetworkRequests. 2282 private boolean unneeded(NetworkAgentInfo nai) { 2283 if (!nai.created || nai.isVPN() || nai.lingering) return false; 2284 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 2285 // If this Network is already the highest scoring Network for a request, or if 2286 // there is hope for it to become one if it validated, then it is needed. 2287 if (nri.isRequest() && nai.satisfies(nri.request) && 2288 (nai.networkRequests.get(nri.request.requestId) != null || 2289 // Note that this catches two important cases: 2290 // 1. Unvalidated cellular will not be reaped when unvalidated WiFi 2291 // is currently satisfying the request. This is desirable when 2292 // cellular ends up validating but WiFi does not. 2293 // 2. Unvalidated WiFi will not be reaped when validated cellular 2294 // is currently satisfying the request. This is desirable when 2295 // WiFi ends up validating and out scoring cellular. 2296 mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() < 2297 nai.getCurrentScoreAsValidated())) { 2298 return false; 2299 } 2300 } 2301 return true; 2302 } 2303 2304 private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { 2305 NetworkRequestInfo nri = mNetworkRequests.get(request); 2306 if (nri != null) { 2307 if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { 2308 if (DBG) log("Attempt to release unowned NetworkRequest " + request); 2309 return; 2310 } 2311 if (VDBG || (DBG && nri.isRequest())) log("releasing NetworkRequest " + request); 2312 nri.unlinkDeathRecipient(); 2313 mNetworkRequests.remove(request); 2314 mNetworkRequestInfoLogs.log("RELEASE " + nri); 2315 if (nri.isRequest()) { 2316 // Find all networks that are satisfying this request and remove the request 2317 // from their request lists. 2318 // TODO - it's my understanding that for a request there is only a single 2319 // network satisfying it, so this loop is wasteful 2320 boolean wasKept = false; 2321 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2322 if (nai.networkRequests.get(nri.request.requestId) != null) { 2323 nai.networkRequests.remove(nri.request.requestId); 2324 if (VDBG) { 2325 log(" Removing from current network " + nai.name() + 2326 ", leaving " + nai.networkRequests.size() + 2327 " requests."); 2328 } 2329 if (unneeded(nai)) { 2330 if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); 2331 teardownUnneededNetwork(nai); 2332 } else { 2333 // suspect there should only be one pass through here 2334 // but if any were kept do the check below 2335 wasKept |= true; 2336 } 2337 } 2338 } 2339 2340 NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); 2341 if (nai != null) { 2342 mNetworkForRequestId.remove(nri.request.requestId); 2343 } 2344 // Maintain the illusion. When this request arrived, we might have pretended 2345 // that a network connected to serve it, even though the network was already 2346 // connected. Now that this request has gone away, we might have to pretend 2347 // that the network disconnected. LegacyTypeTracker will generate that 2348 // phantom disconnect for this type. 2349 if (nri.request.legacyType != TYPE_NONE && nai != null) { 2350 boolean doRemove = true; 2351 if (wasKept) { 2352 // check if any of the remaining requests for this network are for the 2353 // same legacy type - if so, don't remove the nai 2354 for (int i = 0; i < nai.networkRequests.size(); i++) { 2355 NetworkRequest otherRequest = nai.networkRequests.valueAt(i); 2356 if (otherRequest.legacyType == nri.request.legacyType && 2357 isRequest(otherRequest)) { 2358 if (DBG) log(" still have other legacy request - leaving"); 2359 doRemove = false; 2360 } 2361 } 2362 } 2363 2364 if (doRemove) { 2365 mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); 2366 } 2367 } 2368 2369 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 2370 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, 2371 nri.request); 2372 } 2373 } else { 2374 // listens don't have a singular affectedNetwork. Check all networks to see 2375 // if this listen request applies and remove it. 2376 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2377 nai.networkRequests.remove(nri.request.requestId); 2378 if (nri.request.networkCapabilities.hasSignalStrength() && 2379 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 2380 updateSignalStrengthThresholds(nai, "RELEASE", nri.request); 2381 } 2382 } 2383 } 2384 callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); 2385 } 2386 } 2387 2388 public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { 2389 enforceConnectivityInternalPermission(); 2390 mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, 2391 accept ? 1 : 0, always ? 1: 0, network)); 2392 } 2393 2394 private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { 2395 if (DBG) log("handleSetAcceptUnvalidated network=" + network + 2396 " accept=" + accept + " always=" + always); 2397 2398 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2399 if (nai == null) { 2400 // Nothing to do. 2401 return; 2402 } 2403 2404 if (nai.everValidated) { 2405 // The network validated while the dialog box was up. Take no action. 2406 return; 2407 } 2408 2409 if (!nai.networkMisc.explicitlySelected) { 2410 Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); 2411 } 2412 2413 if (accept != nai.networkMisc.acceptUnvalidated) { 2414 int oldScore = nai.getCurrentScore(); 2415 nai.networkMisc.acceptUnvalidated = accept; 2416 rematchAllNetworksAndRequests(nai, oldScore); 2417 sendUpdatedScoreToFactories(nai); 2418 } 2419 2420 if (always) { 2421 nai.asyncChannel.sendMessage( 2422 NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, accept ? 1 : 0); 2423 } 2424 2425 if (!accept) { 2426 // Tell the NetworkAgent to not automatically reconnect to the network. 2427 nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); 2428 // Teardown the nework. 2429 teardownUnneededNetwork(nai); 2430 } 2431 2432 } 2433 2434 private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { 2435 if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); 2436 mHandler.sendMessageDelayed( 2437 mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), 2438 PROMPT_UNVALIDATED_DELAY_MS); 2439 } 2440 2441 private void handlePromptUnvalidated(Network network) { 2442 if (VDBG) log("handlePromptUnvalidated " + network); 2443 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2444 2445 // Only prompt if the network is unvalidated and was explicitly selected by the user, and if 2446 // we haven't already been told to switch to it regardless of whether it validated or not. 2447 // Also don't prompt on captive portals because we're already prompting the user to sign in. 2448 if (nai == null || nai.everValidated || nai.everCaptivePortalDetected || 2449 !nai.networkMisc.explicitlySelected || nai.networkMisc.acceptUnvalidated) { 2450 return; 2451 } 2452 2453 Intent intent = new Intent(ConnectivityManager.ACTION_PROMPT_UNVALIDATED); 2454 intent.setData(Uri.fromParts("netId", Integer.toString(network.netId), null)); 2455 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 2456 intent.setClassName("com.android.settings", 2457 "com.android.settings.wifi.WifiNoInternetDialog"); 2458 2459 PendingIntent pendingIntent = PendingIntent.getActivityAsUser( 2460 mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); 2461 setProvNotificationVisibleIntent(true, nai.network.netId, NotificationType.NO_INTERNET, 2462 nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), pendingIntent, true); 2463 } 2464 2465 private class InternalHandler extends Handler { 2466 public InternalHandler(Looper looper) { 2467 super(looper); 2468 } 2469 2470 @Override 2471 public void handleMessage(Message msg) { 2472 switch (msg.what) { 2473 case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: 2474 case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { 2475 String causedBy = null; 2476 synchronized (ConnectivityService.this) { 2477 if (msg.arg1 == mNetTransitionWakeLockSerialNumber && 2478 mNetTransitionWakeLock.isHeld()) { 2479 mNetTransitionWakeLock.release(); 2480 causedBy = mNetTransitionWakeLockCausedBy; 2481 } else { 2482 break; 2483 } 2484 } 2485 if (VDBG) { 2486 if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { 2487 log("Failed to find a new network - expiring NetTransition Wakelock"); 2488 } else { 2489 log("NetTransition Wakelock (" + 2490 (causedBy == null ? "unknown" : causedBy) + 2491 " cleared because we found a replacement network"); 2492 } 2493 } 2494 break; 2495 } 2496 case EVENT_APPLY_GLOBAL_HTTP_PROXY: { 2497 handleDeprecatedGlobalHttpProxy(); 2498 break; 2499 } 2500 case EVENT_PROXY_HAS_CHANGED: { 2501 handleApplyDefaultProxy((ProxyInfo)msg.obj); 2502 break; 2503 } 2504 case EVENT_REGISTER_NETWORK_FACTORY: { 2505 handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); 2506 break; 2507 } 2508 case EVENT_UNREGISTER_NETWORK_FACTORY: { 2509 handleUnregisterNetworkFactory((Messenger)msg.obj); 2510 break; 2511 } 2512 case EVENT_REGISTER_NETWORK_AGENT: { 2513 handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); 2514 break; 2515 } 2516 case EVENT_REGISTER_NETWORK_REQUEST: 2517 case EVENT_REGISTER_NETWORK_LISTENER: { 2518 handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); 2519 break; 2520 } 2521 case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: 2522 case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { 2523 handleRegisterNetworkRequestWithIntent(msg); 2524 break; 2525 } 2526 case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { 2527 handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); 2528 break; 2529 } 2530 case EVENT_RELEASE_NETWORK_REQUEST: { 2531 handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); 2532 break; 2533 } 2534 case EVENT_SET_ACCEPT_UNVALIDATED: { 2535 handleSetAcceptUnvalidated((Network) msg.obj, msg.arg1 != 0, msg.arg2 != 0); 2536 break; 2537 } 2538 case EVENT_PROMPT_UNVALIDATED: { 2539 handlePromptUnvalidated((Network) msg.obj); 2540 break; 2541 } 2542 case EVENT_CONFIGURE_MOBILE_DATA_ALWAYS_ON: { 2543 handleMobileDataAlwaysOn(); 2544 break; 2545 } 2546 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2547 case NetworkAgent.CMD_START_PACKET_KEEPALIVE: { 2548 mKeepaliveTracker.handleStartKeepalive(msg); 2549 break; 2550 } 2551 // Sent by KeepaliveTracker to process an app request on the state machine thread. 2552 case NetworkAgent.CMD_STOP_PACKET_KEEPALIVE: { 2553 NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); 2554 int slot = msg.arg1; 2555 int reason = msg.arg2; 2556 mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); 2557 break; 2558 } 2559 case EVENT_SYSTEM_READY: { 2560 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 2561 nai.networkMonitor.systemReady = true; 2562 } 2563 break; 2564 } 2565 } 2566 } 2567 } 2568 2569 // javadoc from interface 2570 public int tether(String iface) { 2571 ConnectivityManager.enforceTetherChangePermission(mContext); 2572 if (isTetheringSupported()) { 2573 return mTethering.tether(iface); 2574 } else { 2575 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2576 } 2577 } 2578 2579 // javadoc from interface 2580 public int untether(String iface) { 2581 ConnectivityManager.enforceTetherChangePermission(mContext); 2582 2583 if (isTetheringSupported()) { 2584 return mTethering.untether(iface); 2585 } else { 2586 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2587 } 2588 } 2589 2590 // javadoc from interface 2591 public int getLastTetherError(String iface) { 2592 enforceTetherAccessPermission(); 2593 2594 if (isTetheringSupported()) { 2595 return mTethering.getLastTetherError(iface); 2596 } else { 2597 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2598 } 2599 } 2600 2601 // TODO - proper iface API for selection by property, inspection, etc 2602 public String[] getTetherableUsbRegexs() { 2603 enforceTetherAccessPermission(); 2604 if (isTetheringSupported()) { 2605 return mTethering.getTetherableUsbRegexs(); 2606 } else { 2607 return new String[0]; 2608 } 2609 } 2610 2611 public String[] getTetherableWifiRegexs() { 2612 enforceTetherAccessPermission(); 2613 if (isTetheringSupported()) { 2614 return mTethering.getTetherableWifiRegexs(); 2615 } else { 2616 return new String[0]; 2617 } 2618 } 2619 2620 public String[] getTetherableBluetoothRegexs() { 2621 enforceTetherAccessPermission(); 2622 if (isTetheringSupported()) { 2623 return mTethering.getTetherableBluetoothRegexs(); 2624 } else { 2625 return new String[0]; 2626 } 2627 } 2628 2629 public int setUsbTethering(boolean enable) { 2630 ConnectivityManager.enforceTetherChangePermission(mContext); 2631 if (isTetheringSupported()) { 2632 return mTethering.setUsbTethering(enable); 2633 } else { 2634 return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; 2635 } 2636 } 2637 2638 // TODO - move iface listing, queries, etc to new module 2639 // javadoc from interface 2640 public String[] getTetherableIfaces() { 2641 enforceTetherAccessPermission(); 2642 return mTethering.getTetherableIfaces(); 2643 } 2644 2645 public String[] getTetheredIfaces() { 2646 enforceTetherAccessPermission(); 2647 return mTethering.getTetheredIfaces(); 2648 } 2649 2650 public String[] getTetheringErroredIfaces() { 2651 enforceTetherAccessPermission(); 2652 return mTethering.getErroredIfaces(); 2653 } 2654 2655 public String[] getTetheredDhcpRanges() { 2656 enforceConnectivityInternalPermission(); 2657 return mTethering.getTetheredDhcpRanges(); 2658 } 2659 2660 // if ro.tether.denied = true we default to no tethering 2661 // gservices could set the secure setting to 1 though to enable it on a build where it 2662 // had previously been turned off. 2663 @Override 2664 public boolean isTetheringSupported() { 2665 enforceTetherAccessPermission(); 2666 int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); 2667 boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), 2668 Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) 2669 && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); 2670 return tetherEnabledInSettings && mUserManager.isAdminUser() && 2671 ((mTethering.getTetherableUsbRegexs().length != 0 || 2672 mTethering.getTetherableWifiRegexs().length != 0 || 2673 mTethering.getTetherableBluetoothRegexs().length != 0) && 2674 mTethering.getUpstreamIfaceTypes().length != 0); 2675 } 2676 2677 @Override 2678 public void startTethering(int type, ResultReceiver receiver, 2679 boolean showProvisioningUi) { 2680 ConnectivityManager.enforceTetherChangePermission(mContext); 2681 if (!isTetheringSupported()) { 2682 receiver.send(ConnectivityManager.TETHER_ERROR_UNSUPPORTED, null); 2683 return; 2684 } 2685 mTethering.startTethering(type, receiver, showProvisioningUi); 2686 } 2687 2688 @Override 2689 public void stopTethering(int type) { 2690 ConnectivityManager.enforceTetherChangePermission(mContext); 2691 mTethering.stopTethering(type); 2692 } 2693 2694 // Called when we lose the default network and have no replacement yet. 2695 // This will automatically be cleared after X seconds or a new default network 2696 // becomes CONNECTED, whichever happens first. The timer is started by the 2697 // first caller and not restarted by subsequent callers. 2698 private void requestNetworkTransitionWakelock(String forWhom) { 2699 int serialNum = 0; 2700 synchronized (this) { 2701 if (mNetTransitionWakeLock.isHeld()) return; 2702 serialNum = ++mNetTransitionWakeLockSerialNumber; 2703 mNetTransitionWakeLock.acquire(); 2704 mNetTransitionWakeLockCausedBy = forWhom; 2705 } 2706 mHandler.sendMessageDelayed(mHandler.obtainMessage( 2707 EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), 2708 mNetTransitionWakeLockTimeout); 2709 return; 2710 } 2711 2712 // 100 percent is full good, 0 is full bad. 2713 public void reportInetCondition(int networkType, int percentage) { 2714 NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); 2715 if (nai == null) return; 2716 reportNetworkConnectivity(nai.network, percentage > 50); 2717 } 2718 2719 public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { 2720 enforceAccessPermission(); 2721 enforceInternetPermission(); 2722 2723 NetworkAgentInfo nai; 2724 if (network == null) { 2725 nai = getDefaultNetwork(); 2726 } else { 2727 nai = getNetworkAgentInfoForNetwork(network); 2728 } 2729 if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || 2730 nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { 2731 return; 2732 } 2733 // Revalidate if the app report does not match our current validated state. 2734 if (hasConnectivity == nai.lastValidated) return; 2735 final int uid = Binder.getCallingUid(); 2736 if (DBG) { 2737 log("reportNetworkConnectivity(" + nai.network.netId + ", " + hasConnectivity + 2738 ") by " + uid); 2739 } 2740 synchronized (nai) { 2741 // Validating an uncreated network could result in a call to rematchNetworkAndRequests() 2742 // which isn't meant to work on uncreated networks. 2743 if (!nai.created) return; 2744 2745 if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return; 2746 2747 nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); 2748 } 2749 } 2750 2751 private ProxyInfo getDefaultProxy() { 2752 // this information is already available as a world read/writable jvm property 2753 // so this API change wouldn't have a benifit. It also breaks the passing 2754 // of proxy info to all the JVMs. 2755 // enforceAccessPermission(); 2756 synchronized (mProxyLock) { 2757 ProxyInfo ret = mGlobalProxy; 2758 if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; 2759 return ret; 2760 } 2761 } 2762 2763 public ProxyInfo getProxyForNetwork(Network network) { 2764 if (network == null) return getDefaultProxy(); 2765 final ProxyInfo globalProxy = getGlobalProxy(); 2766 if (globalProxy != null) return globalProxy; 2767 if (!NetworkUtils.queryUserAccess(Binder.getCallingUid(), network.netId)) return null; 2768 // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which 2769 // caller may not have. 2770 final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); 2771 if (nai == null) return null; 2772 synchronized (nai) { 2773 final ProxyInfo proxyInfo = nai.linkProperties.getHttpProxy(); 2774 if (proxyInfo == null) return null; 2775 return new ProxyInfo(proxyInfo); 2776 } 2777 } 2778 2779 // Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present 2780 // (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific 2781 // proxy is null then there is no proxy in place). 2782 private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) { 2783 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2784 && (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) { 2785 proxy = null; 2786 } 2787 return proxy; 2788 } 2789 2790 // ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it 2791 // better for determining if a new proxy broadcast is necessary: 2792 // 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to 2793 // avoid unnecessary broadcasts. 2794 // 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL 2795 // is in place. This is important so legacy PAC resolver (see com.android.proxyhandler) 2796 // changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but 2797 // actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port 2798 // all set. 2799 private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) { 2800 a = canonicalizeProxyInfo(a); 2801 b = canonicalizeProxyInfo(b); 2802 // ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check 2803 // hosts even when PAC URLs are present to account for the legacy PAC resolver. 2804 return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost())); 2805 } 2806 2807 public void setGlobalProxy(ProxyInfo proxyProperties) { 2808 enforceConnectivityInternalPermission(); 2809 2810 synchronized (mProxyLock) { 2811 if (proxyProperties == mGlobalProxy) return; 2812 if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; 2813 if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; 2814 2815 String host = ""; 2816 int port = 0; 2817 String exclList = ""; 2818 String pacFileUrl = ""; 2819 if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || 2820 !Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) { 2821 if (!proxyProperties.isValid()) { 2822 if (DBG) 2823 log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2824 return; 2825 } 2826 mGlobalProxy = new ProxyInfo(proxyProperties); 2827 host = mGlobalProxy.getHost(); 2828 port = mGlobalProxy.getPort(); 2829 exclList = mGlobalProxy.getExclusionListAsString(); 2830 if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) { 2831 pacFileUrl = proxyProperties.getPacFileUrl().toString(); 2832 } 2833 } else { 2834 mGlobalProxy = null; 2835 } 2836 ContentResolver res = mContext.getContentResolver(); 2837 final long token = Binder.clearCallingIdentity(); 2838 try { 2839 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); 2840 Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); 2841 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, 2842 exclList); 2843 Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); 2844 } finally { 2845 Binder.restoreCallingIdentity(token); 2846 } 2847 2848 if (mGlobalProxy == null) { 2849 proxyProperties = mDefaultProxy; 2850 } 2851 sendProxyBroadcast(proxyProperties); 2852 } 2853 } 2854 2855 private void loadGlobalProxy() { 2856 ContentResolver res = mContext.getContentResolver(); 2857 String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); 2858 int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); 2859 String exclList = Settings.Global.getString(res, 2860 Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); 2861 String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); 2862 if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { 2863 ProxyInfo proxyProperties; 2864 if (!TextUtils.isEmpty(pacFileUrl)) { 2865 proxyProperties = new ProxyInfo(pacFileUrl); 2866 } else { 2867 proxyProperties = new ProxyInfo(host, port, exclList); 2868 } 2869 if (!proxyProperties.isValid()) { 2870 if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); 2871 return; 2872 } 2873 2874 synchronized (mProxyLock) { 2875 mGlobalProxy = proxyProperties; 2876 } 2877 } 2878 } 2879 2880 public ProxyInfo getGlobalProxy() { 2881 // this information is already available as a world read/writable jvm property 2882 // so this API change wouldn't have a benifit. It also breaks the passing 2883 // of proxy info to all the JVMs. 2884 // enforceAccessPermission(); 2885 synchronized (mProxyLock) { 2886 return mGlobalProxy; 2887 } 2888 } 2889 2890 private void handleApplyDefaultProxy(ProxyInfo proxy) { 2891 if (proxy != null && TextUtils.isEmpty(proxy.getHost()) 2892 && Uri.EMPTY.equals(proxy.getPacFileUrl())) { 2893 proxy = null; 2894 } 2895 synchronized (mProxyLock) { 2896 if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; 2897 if (mDefaultProxy == proxy) return; // catches repeated nulls 2898 if (proxy != null && !proxy.isValid()) { 2899 if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); 2900 return; 2901 } 2902 2903 // This call could be coming from the PacManager, containing the port of the local 2904 // proxy. If this new proxy matches the global proxy then copy this proxy to the 2905 // global (to get the correct local port), and send a broadcast. 2906 // TODO: Switch PacManager to have its own message to send back rather than 2907 // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. 2908 if ((mGlobalProxy != null) && (proxy != null) 2909 && (!Uri.EMPTY.equals(proxy.getPacFileUrl())) 2910 && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { 2911 mGlobalProxy = proxy; 2912 sendProxyBroadcast(mGlobalProxy); 2913 return; 2914 } 2915 mDefaultProxy = proxy; 2916 2917 if (mGlobalProxy != null) return; 2918 if (!mDefaultProxyDisabled) { 2919 sendProxyBroadcast(proxy); 2920 } 2921 } 2922 } 2923 2924 // If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy. 2925 // This method gets called when any network changes proxy, but the broadcast only ever contains 2926 // the default proxy (even if it hasn't changed). 2927 // TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network 2928 // world where an app might be bound to a non-default network. 2929 private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 2930 ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); 2931 ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); 2932 2933 if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) { 2934 sendProxyBroadcast(getDefaultProxy()); 2935 } 2936 } 2937 2938 private void handleDeprecatedGlobalHttpProxy() { 2939 String proxy = Settings.Global.getString(mContext.getContentResolver(), 2940 Settings.Global.HTTP_PROXY); 2941 if (!TextUtils.isEmpty(proxy)) { 2942 String data[] = proxy.split(":"); 2943 if (data.length == 0) { 2944 return; 2945 } 2946 2947 String proxyHost = data[0]; 2948 int proxyPort = 8080; 2949 if (data.length > 1) { 2950 try { 2951 proxyPort = Integer.parseInt(data[1]); 2952 } catch (NumberFormatException e) { 2953 return; 2954 } 2955 } 2956 ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); 2957 setGlobalProxy(p); 2958 } 2959 } 2960 2961 private void sendProxyBroadcast(ProxyInfo proxy) { 2962 if (proxy == null) proxy = new ProxyInfo("", 0, ""); 2963 if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; 2964 if (DBG) log("sending Proxy Broadcast for " + proxy); 2965 Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); 2966 intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | 2967 Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); 2968 intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); 2969 final long ident = Binder.clearCallingIdentity(); 2970 try { 2971 mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); 2972 } finally { 2973 Binder.restoreCallingIdentity(ident); 2974 } 2975 } 2976 2977 private static class SettingsObserver extends ContentObserver { 2978 final private HashMap<Uri, Integer> mUriEventMap; 2979 final private Context mContext; 2980 final private Handler mHandler; 2981 2982 SettingsObserver(Context context, Handler handler) { 2983 super(null); 2984 mUriEventMap = new HashMap<Uri, Integer>(); 2985 mContext = context; 2986 mHandler = handler; 2987 } 2988 2989 void observe(Uri uri, int what) { 2990 mUriEventMap.put(uri, what); 2991 final ContentResolver resolver = mContext.getContentResolver(); 2992 resolver.registerContentObserver(uri, false, this); 2993 } 2994 2995 @Override 2996 public void onChange(boolean selfChange) { 2997 Slog.wtf(TAG, "Should never be reached."); 2998 } 2999 3000 @Override 3001 public void onChange(boolean selfChange, Uri uri) { 3002 final Integer what = mUriEventMap.get(uri); 3003 if (what != null) { 3004 mHandler.obtainMessage(what.intValue()).sendToTarget(); 3005 } else { 3006 loge("No matching event to send for URI=" + uri); 3007 } 3008 } 3009 } 3010 3011 private static void log(String s) { 3012 Slog.d(TAG, s); 3013 } 3014 3015 private static void loge(String s) { 3016 Slog.e(TAG, s); 3017 } 3018 3019 private static <T> T checkNotNull(T value, String message) { 3020 if (value == null) { 3021 throw new NullPointerException(message); 3022 } 3023 return value; 3024 } 3025 3026 /** 3027 * Prepare for a VPN application. 3028 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3029 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3030 * 3031 * @param oldPackage Package name of the application which currently controls VPN, which will 3032 * be replaced. If there is no such application, this should should either be 3033 * {@code null} or {@link VpnConfig.LEGACY_VPN}. 3034 * @param newPackage Package name of the application which should gain control of VPN, or 3035 * {@code null} to disable. 3036 * @param userId User for whom to prepare the new VPN. 3037 * 3038 * @hide 3039 */ 3040 @Override 3041 public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, 3042 int userId) { 3043 enforceCrossUserPermission(userId); 3044 throwIfLockdownEnabled(); 3045 3046 synchronized(mVpns) { 3047 Vpn vpn = mVpns.get(userId); 3048 if (vpn != null) { 3049 return vpn.prepare(oldPackage, newPackage); 3050 } else { 3051 return false; 3052 } 3053 } 3054 } 3055 3056 /** 3057 * Set whether the VPN package has the ability to launch VPNs without user intervention. 3058 * This method is used by system-privileged apps. 3059 * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, 3060 * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. 3061 * 3062 * @param packageName The package for which authorization state should change. 3063 * @param userId User for whom {@code packageName} is installed. 3064 * @param authorized {@code true} if this app should be able to start a VPN connection without 3065 * explicit user approval, {@code false} if not. 3066 * 3067 * @hide 3068 */ 3069 @Override 3070 public void setVpnPackageAuthorization(String packageName, int userId, boolean authorized) { 3071 enforceCrossUserPermission(userId); 3072 3073 synchronized(mVpns) { 3074 Vpn vpn = mVpns.get(userId); 3075 if (vpn != null) { 3076 vpn.setPackageAuthorization(packageName, authorized); 3077 } 3078 } 3079 } 3080 3081 /** 3082 * Configure a TUN interface and return its file descriptor. Parameters 3083 * are encoded and opaque to this class. This method is used by VpnBuilder 3084 * and not available in ConnectivityManager. Permissions are checked in 3085 * Vpn class. 3086 * @hide 3087 */ 3088 @Override 3089 public ParcelFileDescriptor establishVpn(VpnConfig config) { 3090 throwIfLockdownEnabled(); 3091 int user = UserHandle.getUserId(Binder.getCallingUid()); 3092 synchronized(mVpns) { 3093 return mVpns.get(user).establish(config); 3094 } 3095 } 3096 3097 /** 3098 * Start legacy VPN, controlling native daemons as needed. Creates a 3099 * secondary thread to perform connection work, returning quickly. 3100 */ 3101 @Override 3102 public void startLegacyVpn(VpnProfile profile) { 3103 throwIfLockdownEnabled(); 3104 final LinkProperties egress = getActiveLinkProperties(); 3105 if (egress == null) { 3106 throw new IllegalStateException("Missing active network connection"); 3107 } 3108 int user = UserHandle.getUserId(Binder.getCallingUid()); 3109 synchronized(mVpns) { 3110 mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); 3111 } 3112 } 3113 3114 /** 3115 * Return the information of the ongoing legacy VPN. This method is used 3116 * by VpnSettings and not available in ConnectivityManager. Permissions 3117 * are checked in Vpn class. 3118 */ 3119 @Override 3120 public LegacyVpnInfo getLegacyVpnInfo(int userId) { 3121 enforceCrossUserPermission(userId); 3122 if (mLockdownEnabled) { 3123 return null; 3124 } 3125 3126 synchronized(mVpns) { 3127 return mVpns.get(userId).getLegacyVpnInfo(); 3128 } 3129 } 3130 3131 /** 3132 * Return the information of all ongoing VPNs. This method is used by NetworkStatsService 3133 * and not available in ConnectivityManager. 3134 */ 3135 @Override 3136 public VpnInfo[] getAllVpnInfo() { 3137 enforceConnectivityInternalPermission(); 3138 if (mLockdownEnabled) { 3139 return new VpnInfo[0]; 3140 } 3141 3142 synchronized(mVpns) { 3143 List<VpnInfo> infoList = new ArrayList<>(); 3144 for (int i = 0; i < mVpns.size(); i++) { 3145 VpnInfo info = createVpnInfo(mVpns.valueAt(i)); 3146 if (info != null) { 3147 infoList.add(info); 3148 } 3149 } 3150 return infoList.toArray(new VpnInfo[infoList.size()]); 3151 } 3152 } 3153 3154 /** 3155 * @return VPN information for accounting, or null if we can't retrieve all required 3156 * information, e.g primary underlying iface. 3157 */ 3158 @Nullable 3159 private VpnInfo createVpnInfo(Vpn vpn) { 3160 VpnInfo info = vpn.getVpnInfo(); 3161 if (info == null) { 3162 return null; 3163 } 3164 Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); 3165 // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret 3166 // the underlyingNetworks list. 3167 if (underlyingNetworks == null) { 3168 NetworkAgentInfo defaultNetwork = getDefaultNetwork(); 3169 if (defaultNetwork != null && defaultNetwork.linkProperties != null) { 3170 info.primaryUnderlyingIface = getDefaultNetwork().linkProperties.getInterfaceName(); 3171 } 3172 } else if (underlyingNetworks.length > 0) { 3173 LinkProperties linkProperties = getLinkProperties(underlyingNetworks[0]); 3174 if (linkProperties != null) { 3175 info.primaryUnderlyingIface = linkProperties.getInterfaceName(); 3176 } 3177 } 3178 return info.primaryUnderlyingIface == null ? null : info; 3179 } 3180 3181 /** 3182 * Returns the information of the ongoing VPN for {@code userId}. This method is used by 3183 * VpnDialogs and not available in ConnectivityManager. 3184 * Permissions are checked in Vpn class. 3185 * @hide 3186 */ 3187 @Override 3188 public VpnConfig getVpnConfig(int userId) { 3189 enforceCrossUserPermission(userId); 3190 synchronized(mVpns) { 3191 Vpn vpn = mVpns.get(userId); 3192 if (vpn != null) { 3193 return vpn.getVpnConfig(); 3194 } else { 3195 return null; 3196 } 3197 } 3198 } 3199 3200 @Override 3201 public boolean updateLockdownVpn() { 3202 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 3203 Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); 3204 return false; 3205 } 3206 3207 // Tear down existing lockdown if profile was removed 3208 mLockdownEnabled = LockdownVpnTracker.isEnabled(); 3209 if (mLockdownEnabled) { 3210 final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); 3211 final VpnProfile profile = VpnProfile.decode( 3212 profileName, mKeyStore.get(Credentials.VPN + profileName)); 3213 if (profile == null) { 3214 Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); 3215 setLockdownTracker(null); 3216 return true; 3217 } 3218 int user = UserHandle.getUserId(Binder.getCallingUid()); 3219 synchronized(mVpns) { 3220 Vpn vpn = mVpns.get(user); 3221 if (vpn == null) { 3222 Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); 3223 return false; 3224 } 3225 setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, vpn, profile)); 3226 } 3227 } else { 3228 setLockdownTracker(null); 3229 } 3230 3231 return true; 3232 } 3233 3234 /** 3235 * Internally set new {@link LockdownVpnTracker}, shutting down any existing 3236 * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. 3237 */ 3238 private void setLockdownTracker(LockdownVpnTracker tracker) { 3239 // Shutdown any existing tracker 3240 final LockdownVpnTracker existing = mLockdownTracker; 3241 mLockdownTracker = null; 3242 if (existing != null) { 3243 existing.shutdown(); 3244 } 3245 3246 try { 3247 if (tracker != null) { 3248 mNetd.setFirewallEnabled(true); 3249 mNetd.setFirewallInterfaceRule("lo", true); 3250 mLockdownTracker = tracker; 3251 mLockdownTracker.init(); 3252 } else { 3253 mNetd.setFirewallEnabled(false); 3254 } 3255 } catch (RemoteException e) { 3256 // ignored; NMS lives inside system_server 3257 } 3258 } 3259 3260 private void throwIfLockdownEnabled() { 3261 if (mLockdownEnabled) { 3262 throw new IllegalStateException("Unavailable in lockdown mode"); 3263 } 3264 } 3265 3266 /** 3267 * Sets up or tears down the always-on VPN for user {@param user} as appropriate. 3268 * 3269 * @return {@code false} in case of errors; {@code true} otherwise. 3270 */ 3271 private boolean updateAlwaysOnVpn(int user) { 3272 final String lockdownPackage = getAlwaysOnVpnPackage(user); 3273 if (lockdownPackage == null) { 3274 return true; 3275 } 3276 3277 // Create an intent to start the VPN service declared in the app's manifest. 3278 Intent serviceIntent = new Intent(VpnConfig.SERVICE_INTERFACE); 3279 serviceIntent.setPackage(lockdownPackage); 3280 3281 try { 3282 return mContext.startServiceAsUser(serviceIntent, UserHandle.of(user)) != null; 3283 } catch (RuntimeException e) { 3284 return false; 3285 } 3286 } 3287 3288 @Override 3289 public boolean setAlwaysOnVpnPackage(int userId, String packageName) { 3290 enforceConnectivityInternalPermission(); 3291 enforceCrossUserPermission(userId); 3292 3293 // Can't set always-on VPN if legacy VPN is already in lockdown mode. 3294 if (LockdownVpnTracker.isEnabled()) { 3295 return false; 3296 } 3297 3298 // If the current VPN package is the same as the new one, this is a no-op 3299 final String oldPackage = getAlwaysOnVpnPackage(userId); 3300 if (TextUtils.equals(oldPackage, packageName)) { 3301 return true; 3302 } 3303 3304 synchronized (mVpns) { 3305 Vpn vpn = mVpns.get(userId); 3306 if (vpn == null) { 3307 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3308 return false; 3309 } 3310 if (!vpn.setAlwaysOnPackage(packageName)) { 3311 return false; 3312 } 3313 if (!updateAlwaysOnVpn(userId)) { 3314 vpn.setAlwaysOnPackage(null); 3315 return false; 3316 } 3317 } 3318 return true; 3319 } 3320 3321 @Override 3322 public String getAlwaysOnVpnPackage(int userId) { 3323 enforceConnectivityInternalPermission(); 3324 enforceCrossUserPermission(userId); 3325 3326 synchronized (mVpns) { 3327 Vpn vpn = mVpns.get(userId); 3328 if (vpn == null) { 3329 Slog.w(TAG, "User " + userId + " has no Vpn configuration"); 3330 return null; 3331 } 3332 return vpn.getAlwaysOnPackage(); 3333 } 3334 } 3335 3336 @Override 3337 public int checkMobileProvisioning(int suggestedTimeOutMs) { 3338 // TODO: Remove? Any reason to trigger a provisioning check? 3339 return -1; 3340 } 3341 3342 private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; 3343 private static enum NotificationType { SIGN_IN, NO_INTERNET; }; 3344 3345 private void setProvNotificationVisible(boolean visible, int networkType, String action) { 3346 Intent intent = new Intent(action); 3347 PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); 3348 // Concatenate the range of types onto the range of NetIDs. 3349 int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); 3350 setProvNotificationVisibleIntent(visible, id, NotificationType.SIGN_IN, 3351 networkType, null, pendingIntent, false); 3352 } 3353 3354 /** 3355 * Show or hide network provisioning notifications. 3356 * 3357 * We use notifications for two purposes: to notify that a network requires sign in 3358 * (NotificationType.SIGN_IN), or to notify that a network does not have Internet access 3359 * (NotificationType.NO_INTERNET). We display at most one notification per ID, so on a 3360 * particular network we can display the notification type that was most recently requested. 3361 * So for example if a captive portal fails to reply within a few seconds of connecting, we 3362 * might first display NO_INTERNET, and then when the captive portal check completes, display 3363 * SIGN_IN. 3364 * 3365 * @param id an identifier that uniquely identifies this notification. This must match 3366 * between show and hide calls. We use the NetID value but for legacy callers 3367 * we concatenate the range of types with the range of NetIDs. 3368 */ 3369 private void setProvNotificationVisibleIntent(boolean visible, int id, 3370 NotificationType notifyType, int networkType, String extraInfo, PendingIntent intent, 3371 boolean highPriority) { 3372 if (VDBG || (DBG && visible)) { 3373 log("setProvNotificationVisibleIntent " + notifyType + " visible=" + visible 3374 + " networkType=" + getNetworkTypeName(networkType) 3375 + " extraInfo=" + extraInfo + " highPriority=" + highPriority); 3376 } 3377 3378 Resources r = Resources.getSystem(); 3379 NotificationManager notificationManager = (NotificationManager) mContext 3380 .getSystemService(Context.NOTIFICATION_SERVICE); 3381 3382 if (visible) { 3383 CharSequence title; 3384 CharSequence details; 3385 int icon; 3386 if (notifyType == NotificationType.NO_INTERNET && 3387 networkType == ConnectivityManager.TYPE_WIFI) { 3388 title = r.getString(R.string.wifi_no_internet, 0); 3389 details = r.getString(R.string.wifi_no_internet_detailed); 3390 icon = R.drawable.stat_notify_wifi_in_range; // TODO: Need new icon. 3391 } else if (notifyType == NotificationType.SIGN_IN) { 3392 switch (networkType) { 3393 case ConnectivityManager.TYPE_WIFI: 3394 title = r.getString(R.string.wifi_available_sign_in, 0); 3395 details = r.getString(R.string.network_available_sign_in_detailed, 3396 extraInfo); 3397 icon = R.drawable.stat_notify_wifi_in_range; 3398 break; 3399 case ConnectivityManager.TYPE_MOBILE: 3400 case ConnectivityManager.TYPE_MOBILE_HIPRI: 3401 title = r.getString(R.string.network_available_sign_in, 0); 3402 // TODO: Change this to pull from NetworkInfo once a printable 3403 // name has been added to it 3404 details = mTelephonyManager.getNetworkOperatorName(); 3405 icon = R.drawable.stat_notify_rssi_in_range; 3406 break; 3407 default: 3408 title = r.getString(R.string.network_available_sign_in, 0); 3409 details = r.getString(R.string.network_available_sign_in_detailed, 3410 extraInfo); 3411 icon = R.drawable.stat_notify_rssi_in_range; 3412 break; 3413 } 3414 } else { 3415 Slog.wtf(TAG, "Unknown notification type " + notifyType + "on network type " 3416 + getNetworkTypeName(networkType)); 3417 return; 3418 } 3419 3420 Notification notification = new Notification.Builder(mContext) 3421 .setWhen(0) 3422 .setSmallIcon(icon) 3423 .setAutoCancel(true) 3424 .setTicker(title) 3425 .setColor(mContext.getColor( 3426 com.android.internal.R.color.system_notification_accent_color)) 3427 .setContentTitle(title) 3428 .setContentText(details) 3429 .setContentIntent(intent) 3430 .setLocalOnly(true) 3431 .setPriority(highPriority ? 3432 Notification.PRIORITY_HIGH : 3433 Notification.PRIORITY_DEFAULT) 3434 .setDefaults(highPriority ? Notification.DEFAULT_ALL : 0) 3435 .setOnlyAlertOnce(true) 3436 .build(); 3437 3438 try { 3439 notificationManager.notify(NOTIFICATION_ID, id, notification); 3440 } catch (NullPointerException npe) { 3441 loge("setNotificationVisible: visible notificationManager npe=" + npe); 3442 npe.printStackTrace(); 3443 } 3444 } else { 3445 try { 3446 notificationManager.cancel(NOTIFICATION_ID, id); 3447 } catch (NullPointerException npe) { 3448 loge("setNotificationVisible: cancel notificationManager npe=" + npe); 3449 npe.printStackTrace(); 3450 } 3451 } 3452 } 3453 3454 /** Location to an updatable file listing carrier provisioning urls. 3455 * An example: 3456 * 3457 * <?xml version="1.0" encoding="utf-8"?> 3458 * <provisioningUrls> 3459 * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> 3460 * </provisioningUrls> 3461 */ 3462 private static final String PROVISIONING_URL_PATH = 3463 "/data/misc/radio/provisioning_urls.xml"; 3464 private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); 3465 3466 /** XML tag for root element. */ 3467 private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; 3468 /** XML tag for individual url */ 3469 private static final String TAG_PROVISIONING_URL = "provisioningUrl"; 3470 /** XML attribute for mcc */ 3471 private static final String ATTR_MCC = "mcc"; 3472 /** XML attribute for mnc */ 3473 private static final String ATTR_MNC = "mnc"; 3474 3475 private String getProvisioningUrlBaseFromFile() { 3476 FileReader fileReader = null; 3477 XmlPullParser parser = null; 3478 Configuration config = mContext.getResources().getConfiguration(); 3479 3480 try { 3481 fileReader = new FileReader(mProvisioningUrlFile); 3482 parser = Xml.newPullParser(); 3483 parser.setInput(fileReader); 3484 XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); 3485 3486 while (true) { 3487 XmlUtils.nextElement(parser); 3488 3489 String element = parser.getName(); 3490 if (element == null) break; 3491 3492 if (element.equals(TAG_PROVISIONING_URL)) { 3493 String mcc = parser.getAttributeValue(null, ATTR_MCC); 3494 try { 3495 if (mcc != null && Integer.parseInt(mcc) == config.mcc) { 3496 String mnc = parser.getAttributeValue(null, ATTR_MNC); 3497 if (mnc != null && Integer.parseInt(mnc) == config.mnc) { 3498 parser.next(); 3499 if (parser.getEventType() == XmlPullParser.TEXT) { 3500 return parser.getText(); 3501 } 3502 } 3503 } 3504 } catch (NumberFormatException e) { 3505 loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); 3506 } 3507 } 3508 } 3509 return null; 3510 } catch (FileNotFoundException e) { 3511 loge("Carrier Provisioning Urls file not found"); 3512 } catch (XmlPullParserException e) { 3513 loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); 3514 } catch (IOException e) { 3515 loge("I/O exception reading Carrier Provisioning Urls file: " + e); 3516 } finally { 3517 if (fileReader != null) { 3518 try { 3519 fileReader.close(); 3520 } catch (IOException e) {} 3521 } 3522 } 3523 return null; 3524 } 3525 3526 @Override 3527 public String getMobileProvisioningUrl() { 3528 enforceConnectivityInternalPermission(); 3529 String url = getProvisioningUrlBaseFromFile(); 3530 if (TextUtils.isEmpty(url)) { 3531 url = mContext.getResources().getString(R.string.mobile_provisioning_url); 3532 log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); 3533 } else { 3534 log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); 3535 } 3536 // populate the iccid, imei and phone number in the provisioning url. 3537 if (!TextUtils.isEmpty(url)) { 3538 String phoneNumber = mTelephonyManager.getLine1Number(); 3539 if (TextUtils.isEmpty(phoneNumber)) { 3540 phoneNumber = "0000000000"; 3541 } 3542 url = String.format(url, 3543 mTelephonyManager.getSimSerialNumber() /* ICCID */, 3544 mTelephonyManager.getDeviceId() /* IMEI */, 3545 phoneNumber /* Phone numer */); 3546 } 3547 3548 return url; 3549 } 3550 3551 @Override 3552 public void setProvisioningNotificationVisible(boolean visible, int networkType, 3553 String action) { 3554 enforceConnectivityInternalPermission(); 3555 final long ident = Binder.clearCallingIdentity(); 3556 try { 3557 setProvNotificationVisible(visible, networkType, action); 3558 } finally { 3559 Binder.restoreCallingIdentity(ident); 3560 } 3561 } 3562 3563 @Override 3564 public void setAirplaneMode(boolean enable) { 3565 enforceConnectivityInternalPermission(); 3566 final long ident = Binder.clearCallingIdentity(); 3567 try { 3568 final ContentResolver cr = mContext.getContentResolver(); 3569 Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); 3570 Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); 3571 intent.putExtra("state", enable); 3572 mContext.sendBroadcastAsUser(intent, UserHandle.ALL); 3573 } finally { 3574 Binder.restoreCallingIdentity(ident); 3575 } 3576 } 3577 3578 private void onUserStart(int userId) { 3579 synchronized(mVpns) { 3580 Vpn userVpn = mVpns.get(userId); 3581 if (userVpn != null) { 3582 loge("Starting user already has a VPN"); 3583 return; 3584 } 3585 userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, userId); 3586 mVpns.put(userId, userVpn); 3587 } 3588 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3589 updateLockdownVpn(); 3590 } else { 3591 updateAlwaysOnVpn(userId); 3592 } 3593 } 3594 3595 private void onUserStop(int userId) { 3596 synchronized(mVpns) { 3597 Vpn userVpn = mVpns.get(userId); 3598 if (userVpn == null) { 3599 loge("Stopping user has no VPN"); 3600 return; 3601 } 3602 mVpns.delete(userId); 3603 } 3604 } 3605 3606 private void onUserAdded(int userId) { 3607 synchronized(mVpns) { 3608 final int vpnsSize = mVpns.size(); 3609 for (int i = 0; i < vpnsSize; i++) { 3610 Vpn vpn = mVpns.valueAt(i); 3611 vpn.onUserAdded(userId); 3612 } 3613 } 3614 } 3615 3616 private void onUserRemoved(int userId) { 3617 synchronized(mVpns) { 3618 final int vpnsSize = mVpns.size(); 3619 for (int i = 0; i < vpnsSize; i++) { 3620 Vpn vpn = mVpns.valueAt(i); 3621 vpn.onUserRemoved(userId); 3622 } 3623 } 3624 } 3625 3626 private void onUserUnlocked(int userId) { 3627 // User present may be sent because of an unlock, which might mean an unlocked keystore. 3628 if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { 3629 updateLockdownVpn(); 3630 } else { 3631 updateAlwaysOnVpn(userId); 3632 } 3633 } 3634 3635 private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { 3636 @Override 3637 public void onReceive(Context context, Intent intent) { 3638 final String action = intent.getAction(); 3639 final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); 3640 if (userId == UserHandle.USER_NULL) return; 3641 3642 if (Intent.ACTION_USER_STARTING.equals(action)) { 3643 onUserStart(userId); 3644 } else if (Intent.ACTION_USER_STOPPING.equals(action)) { 3645 onUserStop(userId); 3646 } else if (Intent.ACTION_USER_ADDED.equals(action)) { 3647 onUserAdded(userId); 3648 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 3649 onUserRemoved(userId); 3650 } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { 3651 onUserUnlocked(userId); 3652 } 3653 } 3654 }; 3655 3656 private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos = 3657 new HashMap<Messenger, NetworkFactoryInfo>(); 3658 private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = 3659 new HashMap<NetworkRequest, NetworkRequestInfo>(); 3660 3661 private static class NetworkFactoryInfo { 3662 public final String name; 3663 public final Messenger messenger; 3664 public final AsyncChannel asyncChannel; 3665 3666 public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { 3667 this.name = name; 3668 this.messenger = messenger; 3669 this.asyncChannel = asyncChannel; 3670 } 3671 } 3672 3673 /** 3674 * A NetworkRequest as registered by an application can be one of three 3675 * types: 3676 * 3677 * - "listen", for which the framework will issue callbacks about any 3678 * and all networks that match the specified NetworkCapabilities, 3679 * 3680 * - "request", capable of causing a specific network to be created 3681 * first (e.g. a telephony DUN request), the framework will issue 3682 * callbacks about the single, highest scoring current network 3683 * (if any) that matches the specified NetworkCapabilities, or 3684 * 3685 * - "track the default network", a hybrid of the two designed such 3686 * that the framework will issue callbacks for the single, highest 3687 * scoring current network (if any) that matches the capabilities of 3688 * the default Internet request (mDefaultRequest), but which cannot 3689 * cause the framework to either create or retain the existence of 3690 * any specific network. 3691 * 3692 */ 3693 private static enum NetworkRequestType { 3694 LISTEN, 3695 TRACK_DEFAULT, 3696 REQUEST 3697 }; 3698 3699 /** 3700 * Tracks info about the requester. 3701 * Also used to notice when the calling process dies so we can self-expire 3702 */ 3703 private class NetworkRequestInfo implements IBinder.DeathRecipient { 3704 final NetworkRequest request; 3705 final PendingIntent mPendingIntent; 3706 boolean mPendingIntentSent; 3707 private final IBinder mBinder; 3708 final int mPid; 3709 final int mUid; 3710 final Messenger messenger; 3711 private final NetworkRequestType mType; 3712 3713 NetworkRequestInfo(NetworkRequest r, PendingIntent pi, NetworkRequestType type) { 3714 request = r; 3715 mPendingIntent = pi; 3716 messenger = null; 3717 mBinder = null; 3718 mPid = getCallingPid(); 3719 mUid = getCallingUid(); 3720 mType = type; 3721 } 3722 3723 NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, NetworkRequestType type) { 3724 super(); 3725 messenger = m; 3726 request = r; 3727 mBinder = binder; 3728 mPid = getCallingPid(); 3729 mUid = getCallingUid(); 3730 mType = type; 3731 mPendingIntent = null; 3732 3733 try { 3734 mBinder.linkToDeath(this, 0); 3735 } catch (RemoteException e) { 3736 binderDied(); 3737 } 3738 } 3739 3740 private String typeString() { 3741 switch (mType) { 3742 case LISTEN: return "Listen"; 3743 case REQUEST: return "Request"; 3744 case TRACK_DEFAULT: return "Track default"; 3745 default: 3746 return "unknown type"; 3747 } 3748 } 3749 3750 void unlinkDeathRecipient() { 3751 if (mBinder != null) { 3752 mBinder.unlinkToDeath(this, 0); 3753 } 3754 } 3755 3756 public void binderDied() { 3757 log("ConnectivityService NetworkRequestInfo binderDied(" + 3758 request + ", " + mBinder + ")"); 3759 releaseNetworkRequest(request); 3760 } 3761 3762 /** 3763 * Returns true iff. the contained NetworkRequest is one that: 3764 * 3765 * - should be associated with at most one satisfying network 3766 * at a time; 3767 * 3768 * - should cause a network to be kept up if it is the only network 3769 * which can satisfy the NetworkReqeust. 3770 * 3771 * For full detail of how isRequest() is used for pairing Networks with 3772 * NetworkRequests read rematchNetworkAndRequests(). 3773 * 3774 * TODO: Rename to something more properly descriptive. 3775 */ 3776 public boolean isRequest() { 3777 return (mType == NetworkRequestType.TRACK_DEFAULT) || 3778 (mType == NetworkRequestType.REQUEST); 3779 } 3780 3781 public String toString() { 3782 return typeString() + 3783 " from uid/pid:" + mUid + "/" + mPid + 3784 " for " + request + 3785 (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); 3786 } 3787 } 3788 3789 private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { 3790 final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); 3791 if (badCapability != null) { 3792 throw new IllegalArgumentException("Cannot request network with " + badCapability); 3793 } 3794 } 3795 3796 private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { 3797 final SortedSet<Integer> thresholds = new TreeSet(); 3798 synchronized (nai) { 3799 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 3800 if (nri.request.networkCapabilities.hasSignalStrength() && 3801 nai.satisfiesImmutableCapabilitiesOf(nri.request)) { 3802 thresholds.add(nri.request.networkCapabilities.getSignalStrength()); 3803 } 3804 } 3805 } 3806 return new ArrayList<Integer>(thresholds); 3807 } 3808 3809 private void updateSignalStrengthThresholds( 3810 NetworkAgentInfo nai, String reason, NetworkRequest request) { 3811 ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); 3812 Bundle thresholds = new Bundle(); 3813 thresholds.putIntegerArrayList("thresholds", thresholdsArray); 3814 3815 if (VDBG || (DBG && !"CONNECT".equals(reason))) { 3816 String detail; 3817 if (request != null && request.networkCapabilities.hasSignalStrength()) { 3818 detail = reason + " " + request.networkCapabilities.getSignalStrength(); 3819 } else { 3820 detail = reason; 3821 } 3822 log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", 3823 detail, Arrays.toString(thresholdsArray.toArray()), nai.name())); 3824 } 3825 3826 nai.asyncChannel.sendMessage( 3827 android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, 3828 0, 0, thresholds); 3829 } 3830 3831 @Override 3832 public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, 3833 Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { 3834 final NetworkRequestType type = (networkCapabilities == null) 3835 ? NetworkRequestType.TRACK_DEFAULT 3836 : NetworkRequestType.REQUEST; 3837 // If the requested networkCapabilities is null, take them instead from 3838 // the default network request. This allows callers to keep track of 3839 // the system default network. 3840 if (type == NetworkRequestType.TRACK_DEFAULT) { 3841 networkCapabilities = new NetworkCapabilities(mDefaultRequest.networkCapabilities); 3842 enforceAccessPermission(); 3843 } else { 3844 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3845 enforceNetworkRequestPermissions(networkCapabilities); 3846 } 3847 enforceMeteredApnPolicy(networkCapabilities); 3848 ensureRequestableCapabilities(networkCapabilities); 3849 3850 if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { 3851 throw new IllegalArgumentException("Bad timeout specified"); 3852 } 3853 3854 if (NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER 3855 .equals(networkCapabilities.getNetworkSpecifier())) { 3856 throw new IllegalArgumentException("Invalid network specifier - must not be '" 3857 + NetworkCapabilities.MATCH_ALL_REQUESTS_NETWORK_SPECIFIER + "'"); 3858 } 3859 3860 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, 3861 nextNetworkRequestId()); 3862 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, type); 3863 if (DBG) log("requestNetwork for " + nri); 3864 3865 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); 3866 if (timeoutMs > 0) { 3867 mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, 3868 nri), timeoutMs); 3869 } 3870 return networkRequest; 3871 } 3872 3873 private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { 3874 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { 3875 enforceConnectivityInternalPermission(); 3876 } else { 3877 enforceChangePermission(); 3878 } 3879 } 3880 3881 @Override 3882 public boolean requestBandwidthUpdate(Network network) { 3883 enforceAccessPermission(); 3884 NetworkAgentInfo nai = null; 3885 if (network == null) { 3886 return false; 3887 } 3888 synchronized (mNetworkForNetId) { 3889 nai = mNetworkForNetId.get(network.netId); 3890 } 3891 if (nai != null) { 3892 nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); 3893 return true; 3894 } 3895 return false; 3896 } 3897 3898 3899 private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { 3900 // if UID is restricted, don't allow them to bring up metered APNs 3901 if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED) == false) { 3902 final int uidRules; 3903 final int uid = Binder.getCallingUid(); 3904 synchronized(mRulesLock) { 3905 uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); 3906 } 3907 if (uidRules != RULE_ALLOW_ALL) { 3908 // we could silently fail or we can filter the available nets to only give 3909 // them those they have access to. Chose the more useful 3910 networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); 3911 } 3912 } 3913 } 3914 3915 @Override 3916 public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, 3917 PendingIntent operation) { 3918 checkNotNull(operation, "PendingIntent cannot be null."); 3919 networkCapabilities = new NetworkCapabilities(networkCapabilities); 3920 enforceNetworkRequestPermissions(networkCapabilities); 3921 enforceMeteredApnPolicy(networkCapabilities); 3922 ensureRequestableCapabilities(networkCapabilities); 3923 3924 NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, 3925 nextNetworkRequestId()); 3926 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3927 NetworkRequestType.REQUEST); 3928 if (DBG) log("pendingRequest for " + nri); 3929 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, 3930 nri)); 3931 return networkRequest; 3932 } 3933 3934 private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { 3935 mHandler.sendMessageDelayed( 3936 mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3937 getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); 3938 } 3939 3940 @Override 3941 public void releasePendingNetworkRequest(PendingIntent operation) { 3942 checkNotNull(operation, "PendingIntent cannot be null."); 3943 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, 3944 getCallingUid(), 0, operation)); 3945 } 3946 3947 // In order to implement the compatibility measure for pre-M apps that call 3948 // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, 3949 // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. 3950 // This ensures it has permission to do so. 3951 private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { 3952 if (nc == null) { 3953 return false; 3954 } 3955 int[] transportTypes = nc.getTransportTypes(); 3956 if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { 3957 return false; 3958 } 3959 try { 3960 mContext.enforceCallingOrSelfPermission( 3961 android.Manifest.permission.ACCESS_WIFI_STATE, 3962 "ConnectivityService"); 3963 } catch (SecurityException e) { 3964 return false; 3965 } 3966 return true; 3967 } 3968 3969 @Override 3970 public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, 3971 Messenger messenger, IBinder binder) { 3972 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3973 enforceAccessPermission(); 3974 } 3975 3976 NetworkRequest networkRequest = new NetworkRequest( 3977 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3978 NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, 3979 NetworkRequestType.LISTEN); 3980 if (VDBG) log("listenForNetwork for " + nri); 3981 3982 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 3983 return networkRequest; 3984 } 3985 3986 @Override 3987 public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, 3988 PendingIntent operation) { 3989 checkNotNull(operation, "PendingIntent cannot be null."); 3990 if (!hasWifiNetworkListenPermission(networkCapabilities)) { 3991 enforceAccessPermission(); 3992 } 3993 3994 NetworkRequest networkRequest = new NetworkRequest( 3995 new NetworkCapabilities(networkCapabilities), TYPE_NONE, nextNetworkRequestId()); 3996 NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation, 3997 NetworkRequestType.LISTEN); 3998 if (VDBG) log("pendingListenForNetwork for " + nri); 3999 4000 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); 4001 } 4002 4003 @Override 4004 public void releaseNetworkRequest(NetworkRequest networkRequest) { 4005 mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 4006 0, networkRequest)); 4007 } 4008 4009 @Override 4010 public void registerNetworkFactory(Messenger messenger, String name) { 4011 enforceConnectivityInternalPermission(); 4012 NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); 4013 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); 4014 } 4015 4016 private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { 4017 if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); 4018 mNetworkFactoryInfos.put(nfi.messenger, nfi); 4019 nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); 4020 } 4021 4022 @Override 4023 public void unregisterNetworkFactory(Messenger messenger) { 4024 enforceConnectivityInternalPermission(); 4025 mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); 4026 } 4027 4028 private void handleUnregisterNetworkFactory(Messenger messenger) { 4029 NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); 4030 if (nfi == null) { 4031 loge("Failed to find Messenger in unregisterNetworkFactory"); 4032 return; 4033 } 4034 if (DBG) log("unregisterNetworkFactory for " + nfi.name); 4035 } 4036 4037 /** 4038 * NetworkAgentInfo supporting a request by requestId. 4039 * These have already been vetted (their Capabilities satisfy the request) 4040 * and the are the highest scored network available. 4041 * the are keyed off the Requests requestId. 4042 */ 4043 // TODO: Yikes, this is accessed on multiple threads: add synchronization. 4044 private final SparseArray<NetworkAgentInfo> mNetworkForRequestId = 4045 new SparseArray<NetworkAgentInfo>(); 4046 4047 // NOTE: Accessed on multiple threads, must be synchronized on itself. 4048 @GuardedBy("mNetworkForNetId") 4049 private final SparseArray<NetworkAgentInfo> mNetworkForNetId = 4050 new SparseArray<NetworkAgentInfo>(); 4051 // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. 4052 // An entry is first added to mNetIdInUse, prior to mNetworkForNetId, so 4053 // there may not be a strict 1:1 correlation between the two. 4054 @GuardedBy("mNetworkForNetId") 4055 private final SparseBooleanArray mNetIdInUse = new SparseBooleanArray(); 4056 4057 // NetworkAgentInfo keyed off its connecting messenger 4058 // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays 4059 // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). 4060 private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = 4061 new HashMap<Messenger, NetworkAgentInfo>(); 4062 4063 @GuardedBy("mBlockedAppUids") 4064 private final HashSet<Integer> mBlockedAppUids = new HashSet(); 4065 4066 // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. 4067 private final NetworkRequest mDefaultRequest; 4068 4069 // Request used to optionally keep mobile data active even when higher 4070 // priority networks like Wi-Fi are active. 4071 private final NetworkRequest mDefaultMobileDataRequest; 4072 4073 private NetworkAgentInfo getDefaultNetwork() { 4074 return mNetworkForRequestId.get(mDefaultRequest.requestId); 4075 } 4076 4077 private boolean isDefaultNetwork(NetworkAgentInfo nai) { 4078 return nai == getDefaultNetwork(); 4079 } 4080 4081 public int registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, 4082 LinkProperties linkProperties, NetworkCapabilities networkCapabilities, 4083 int currentScore, NetworkMisc networkMisc) { 4084 enforceConnectivityInternalPermission(); 4085 4086 // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network 4087 // satisfies mDefaultRequest. 4088 final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), 4089 new Network(reserveNetId()), new NetworkInfo(networkInfo), new LinkProperties( 4090 linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, 4091 mContext, mTrackerHandler, new NetworkMisc(networkMisc), mDefaultRequest, this); 4092 synchronized (this) { 4093 nai.networkMonitor.systemReady = mSystemReady; 4094 } 4095 addValidationLogs(nai.networkMonitor.getValidationLogs(), nai.network); 4096 if (DBG) log("registerNetworkAgent " + nai); 4097 mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); 4098 return nai.network.netId; 4099 } 4100 4101 private void handleRegisterNetworkAgent(NetworkAgentInfo na) { 4102 if (VDBG) log("Got NetworkAgent Messenger"); 4103 mNetworkAgentInfos.put(na.messenger, na); 4104 synchronized (mNetworkForNetId) { 4105 mNetworkForNetId.put(na.network.netId, na); 4106 } 4107 na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); 4108 NetworkInfo networkInfo = na.networkInfo; 4109 na.networkInfo = null; 4110 updateNetworkInfo(na, networkInfo); 4111 } 4112 4113 private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { 4114 LinkProperties newLp = networkAgent.linkProperties; 4115 int netId = networkAgent.network.netId; 4116 4117 // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before 4118 // we do anything else, make sure its LinkProperties are accurate. 4119 if (networkAgent.clatd != null) { 4120 networkAgent.clatd.fixupLinkProperties(oldLp); 4121 } 4122 4123 updateInterfaces(newLp, oldLp, netId); 4124 updateMtu(newLp, oldLp); 4125 // TODO - figure out what to do for clat 4126// for (LinkProperties lp : newLp.getStackedLinks()) { 4127// updateMtu(lp, null); 4128// } 4129 updateTcpBufferSizes(networkAgent); 4130 4131 updateRoutes(newLp, oldLp, netId); 4132 updateDnses(newLp, oldLp, netId); 4133 4134 updateClat(newLp, oldLp, networkAgent); 4135 if (isDefaultNetwork(networkAgent)) { 4136 handleApplyDefaultProxy(newLp.getHttpProxy()); 4137 } else { 4138 updateProxy(newLp, oldLp, networkAgent); 4139 } 4140 // TODO - move this check to cover the whole function 4141 if (!Objects.equals(newLp, oldLp)) { 4142 notifyIfacesChangedForNetworkStats(); 4143 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); 4144 } 4145 4146 mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); 4147 } 4148 4149 private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) { 4150 final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted(); 4151 final boolean shouldRunClat = Nat464Xlat.requiresClat(nai); 4152 4153 if (!wasRunningClat && shouldRunClat) { 4154 nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai); 4155 nai.clatd.start(); 4156 } else if (wasRunningClat && !shouldRunClat) { 4157 nai.clatd.stop(); 4158 } 4159 } 4160 4161 private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { 4162 CompareResult<String> interfaceDiff = new CompareResult<String>(); 4163 if (oldLp != null) { 4164 interfaceDiff = oldLp.compareAllInterfaceNames(newLp); 4165 } else if (newLp != null) { 4166 interfaceDiff.added = newLp.getAllInterfaceNames(); 4167 } 4168 for (String iface : interfaceDiff.added) { 4169 try { 4170 if (DBG) log("Adding iface " + iface + " to network " + netId); 4171 mNetd.addInterfaceToNetwork(iface, netId); 4172 } catch (Exception e) { 4173 loge("Exception adding interface: " + e); 4174 } 4175 } 4176 for (String iface : interfaceDiff.removed) { 4177 try { 4178 if (DBG) log("Removing iface " + iface + " from network " + netId); 4179 mNetd.removeInterfaceFromNetwork(iface, netId); 4180 } catch (Exception e) { 4181 loge("Exception removing interface: " + e); 4182 } 4183 } 4184 } 4185 4186 /** 4187 * Have netd update routes from oldLp to newLp. 4188 * @return true if routes changed between oldLp and newLp 4189 */ 4190 private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { 4191 CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>(); 4192 if (oldLp != null) { 4193 routeDiff = oldLp.compareAllRoutes(newLp); 4194 } else if (newLp != null) { 4195 routeDiff.added = newLp.getAllRoutes(); 4196 } 4197 4198 // add routes before removing old in case it helps with continuous connectivity 4199 4200 // do this twice, adding non-nexthop routes first, then routes they are dependent on 4201 for (RouteInfo route : routeDiff.added) { 4202 if (route.hasGateway()) continue; 4203 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4204 try { 4205 mNetd.addRoute(netId, route); 4206 } catch (Exception e) { 4207 if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { 4208 loge("Exception in addRoute for non-gateway: " + e); 4209 } 4210 } 4211 } 4212 for (RouteInfo route : routeDiff.added) { 4213 if (route.hasGateway() == false) continue; 4214 if (VDBG) log("Adding Route [" + route + "] to network " + netId); 4215 try { 4216 mNetd.addRoute(netId, route); 4217 } catch (Exception e) { 4218 if ((route.getGateway() instanceof Inet4Address) || VDBG) { 4219 loge("Exception in addRoute for gateway: " + e); 4220 } 4221 } 4222 } 4223 4224 for (RouteInfo route : routeDiff.removed) { 4225 if (VDBG) log("Removing Route [" + route + "] from network " + netId); 4226 try { 4227 mNetd.removeRoute(netId, route); 4228 } catch (Exception e) { 4229 loge("Exception in removeRoute: " + e); 4230 } 4231 } 4232 return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); 4233 } 4234 4235 private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId) { 4236 if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { 4237 return; // no updating necessary 4238 } 4239 4240 Collection<InetAddress> dnses = newLp.getDnsServers(); 4241 if (DBG) log("Setting DNS servers for network " + netId + " to " + dnses); 4242 try { 4243 mNetd.setDnsServersForNetwork( 4244 netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); 4245 } catch (Exception e) { 4246 loge("Exception in setDnsServersForNetwork: " + e); 4247 } 4248 final NetworkAgentInfo defaultNai = getDefaultNetwork(); 4249 if (defaultNai != null && defaultNai.network.netId == netId) { 4250 setDefaultDnsSystemProperties(dnses); 4251 } 4252 flushVmDnsCache(); 4253 } 4254 4255 private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) { 4256 int last = 0; 4257 for (InetAddress dns : dnses) { 4258 ++last; 4259 String key = "net.dns" + last; 4260 String value = dns.getHostAddress(); 4261 SystemProperties.set(key, value); 4262 } 4263 for (int i = last + 1; i <= mNumDnsEntries; ++i) { 4264 String key = "net.dns" + i; 4265 SystemProperties.set(key, ""); 4266 } 4267 mNumDnsEntries = last; 4268 } 4269 4270 /** 4271 * Update the NetworkCapabilities for {@code networkAgent} to {@code networkCapabilities} 4272 * augmented with any stateful capabilities implied from {@code networkAgent} 4273 * (e.g., validated status and captive portal status). 4274 * 4275 * @param nai the network having its capabilities updated. 4276 * @param networkCapabilities the new network capabilities. 4277 */ 4278 private void updateCapabilities(NetworkAgentInfo nai, NetworkCapabilities networkCapabilities) { 4279 // Don't modify caller's NetworkCapabilities. 4280 networkCapabilities = new NetworkCapabilities(networkCapabilities); 4281 if (nai.lastValidated) { 4282 networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED); 4283 } else { 4284 networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED); 4285 } 4286 if (nai.lastCaptivePortalDetected) { 4287 networkCapabilities.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4288 } else { 4289 networkCapabilities.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); 4290 } 4291 if (!Objects.equals(nai.networkCapabilities, networkCapabilities)) { 4292 final int oldScore = nai.getCurrentScore(); 4293 if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) != 4294 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { 4295 try { 4296 mNetd.setNetworkPermission(nai.network.netId, 4297 networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) ? 4298 null : NetworkManagementService.PERMISSION_SYSTEM); 4299 } catch (RemoteException e) { 4300 loge("Exception in setNetworkPermission: " + e); 4301 } 4302 } 4303 synchronized (nai) { 4304 nai.networkCapabilities = networkCapabilities; 4305 } 4306 rematchAllNetworksAndRequests(nai, oldScore); 4307 notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); 4308 } 4309 } 4310 4311 private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { 4312 for (int i = 0; i < nai.networkRequests.size(); i++) { 4313 NetworkRequest nr = nai.networkRequests.valueAt(i); 4314 // Don't send listening requests to factories. b/17393458 4315 if (!isRequest(nr)) continue; 4316 sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); 4317 } 4318 } 4319 4320 private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { 4321 if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); 4322 for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { 4323 nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, 4324 networkRequest); 4325 } 4326 } 4327 4328 private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, 4329 int notificationType) { 4330 if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { 4331 Intent intent = new Intent(); 4332 intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); 4333 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); 4334 nri.mPendingIntentSent = true; 4335 sendIntent(nri.mPendingIntent, intent); 4336 } 4337 // else not handled 4338 } 4339 4340 private void sendIntent(PendingIntent pendingIntent, Intent intent) { 4341 mPendingIntentWakeLock.acquire(); 4342 try { 4343 if (DBG) log("Sending " + pendingIntent); 4344 pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); 4345 } catch (PendingIntent.CanceledException e) { 4346 if (DBG) log(pendingIntent + " was not sent, it had been canceled."); 4347 mPendingIntentWakeLock.release(); 4348 releasePendingNetworkRequest(pendingIntent); 4349 } 4350 // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() 4351 } 4352 4353 @Override 4354 public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, 4355 String resultData, Bundle resultExtras) { 4356 if (DBG) log("Finished sending " + pendingIntent); 4357 mPendingIntentWakeLock.release(); 4358 // Release with a delay so the receiving client has an opportunity to put in its 4359 // own request. 4360 releasePendingNetworkRequestWithDelay(pendingIntent); 4361 } 4362 4363 private void callCallbackForRequest(NetworkRequestInfo nri, 4364 NetworkAgentInfo networkAgent, int notificationType) { 4365 if (nri.messenger == null) return; // Default request has no msgr 4366 Bundle bundle = new Bundle(); 4367 bundle.putParcelable(NetworkRequest.class.getSimpleName(), 4368 new NetworkRequest(nri.request)); 4369 Message msg = Message.obtain(); 4370 if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && 4371 notificationType != ConnectivityManager.CALLBACK_RELEASED) { 4372 bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); 4373 } 4374 switch (notificationType) { 4375 case ConnectivityManager.CALLBACK_LOSING: { 4376 msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor 4377 break; 4378 } 4379 case ConnectivityManager.CALLBACK_CAP_CHANGED: { 4380 bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), 4381 new NetworkCapabilities(networkAgent.networkCapabilities)); 4382 break; 4383 } 4384 case ConnectivityManager.CALLBACK_IP_CHANGED: { 4385 bundle.putParcelable(LinkProperties.class.getSimpleName(), 4386 new LinkProperties(networkAgent.linkProperties)); 4387 break; 4388 } 4389 } 4390 msg.what = notificationType; 4391 msg.setData(bundle); 4392 try { 4393 if (VDBG) { 4394 log("sending notification " + notifyTypeToName(notificationType) + 4395 " for " + nri.request); 4396 } 4397 nri.messenger.send(msg); 4398 } catch (RemoteException e) { 4399 // may occur naturally in the race of binder death. 4400 loge("RemoteException caught trying to send a callback msg for " + nri.request); 4401 } 4402 } 4403 4404 private void teardownUnneededNetwork(NetworkAgentInfo nai) { 4405 for (int i = 0; i < nai.networkRequests.size(); i++) { 4406 NetworkRequest nr = nai.networkRequests.valueAt(i); 4407 // Ignore listening requests. 4408 if (!isRequest(nr)) continue; 4409 loge("Dead network still had at least " + nr); 4410 break; 4411 } 4412 nai.asyncChannel.disconnect(); 4413 } 4414 4415 private void handleLingerComplete(NetworkAgentInfo oldNetwork) { 4416 if (oldNetwork == null) { 4417 loge("Unknown NetworkAgentInfo in handleLingerComplete"); 4418 return; 4419 } 4420 if (DBG) log("handleLingerComplete for " + oldNetwork.name()); 4421 teardownUnneededNetwork(oldNetwork); 4422 } 4423 4424 private void makeDefault(NetworkAgentInfo newNetwork) { 4425 if (DBG) log("Switching to new default network: " + newNetwork); 4426 ConnectivityServiceChangeEvent.logEvent(newNetwork.network.netId); 4427 setupDataActivityTracking(newNetwork); 4428 try { 4429 mNetd.setDefaultNetId(newNetwork.network.netId); 4430 } catch (Exception e) { 4431 loge("Exception setting default network :" + e); 4432 } 4433 notifyLockdownVpn(newNetwork); 4434 handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); 4435 updateTcpBufferSizes(newNetwork); 4436 setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers()); 4437 } 4438 4439 // Handles a network appearing or improving its score. 4440 // 4441 // - Evaluates all current NetworkRequests that can be 4442 // satisfied by newNetwork, and reassigns to newNetwork 4443 // any such requests for which newNetwork is the best. 4444 // 4445 // - Lingers any validated Networks that as a result are no longer 4446 // needed. A network is needed if it is the best network for 4447 // one or more NetworkRequests, or if it is a VPN. 4448 // 4449 // - Tears down newNetwork if it just became validated 4450 // but turns out to be unneeded. 4451 // 4452 // - If reapUnvalidatedNetworks==REAP, tears down unvalidated 4453 // networks that have no chance (i.e. even if validated) 4454 // of becoming the highest scoring network. 4455 // 4456 // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, 4457 // it does not remove NetworkRequests that other Networks could better satisfy. 4458 // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. 4459 // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} 4460 // as it performs better by a factor of the number of Networks. 4461 // 4462 // @param newNetwork is the network to be matched against NetworkRequests. 4463 // @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be 4464 // performed to tear down unvalidated networks that have no chance (i.e. even if 4465 // validated) of becoming the highest scoring network. 4466 private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, 4467 ReapUnvalidatedNetworks reapUnvalidatedNetworks) { 4468 if (!newNetwork.created) return; 4469 boolean keep = newNetwork.isVPN(); 4470 boolean isNewDefault = false; 4471 NetworkAgentInfo oldDefaultNetwork = null; 4472 if (VDBG) log("rematching " + newNetwork.name()); 4473 // Find and migrate to this Network any NetworkRequests for 4474 // which this network is now the best. 4475 ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>(); 4476 ArrayList<NetworkRequestInfo> addedRequests = new ArrayList<NetworkRequestInfo>(); 4477 if (VDBG) log(" network has: " + newNetwork.networkCapabilities); 4478 for (NetworkRequestInfo nri : mNetworkRequests.values()) { 4479 final NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); 4480 final boolean satisfies = newNetwork.satisfies(nri.request); 4481 if (newNetwork == currentNetwork && satisfies) { 4482 if (VDBG) { 4483 log("Network " + newNetwork.name() + " was already satisfying" + 4484 " request " + nri.request.requestId + ". No change."); 4485 } 4486 keep = true; 4487 continue; 4488 } 4489 4490 // check if it satisfies the NetworkCapabilities 4491 if (VDBG) log(" checking if request is satisfied: " + nri.request); 4492 if (satisfies) { 4493 if (!nri.isRequest()) { 4494 // This is not a request, it's a callback listener. 4495 // Add it to newNetwork regardless of score. 4496 if (newNetwork.addRequest(nri.request)) addedRequests.add(nri); 4497 continue; 4498 } 4499 4500 // next check if it's better than any current network we're using for 4501 // this request 4502 if (VDBG) { 4503 log("currentScore = " + 4504 (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + 4505 ", newScore = " + newNetwork.getCurrentScore()); 4506 } 4507 if (currentNetwork == null || 4508 currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { 4509 if (VDBG) log("rematch for " + newNetwork.name()); 4510 if (currentNetwork != null) { 4511 if (VDBG) log(" accepting network in place of " + currentNetwork.name()); 4512 currentNetwork.networkRequests.remove(nri.request.requestId); 4513 currentNetwork.networkLingered.add(nri.request); 4514 affectedNetworks.add(currentNetwork); 4515 } else { 4516 if (VDBG) log(" accepting network in place of null"); 4517 } 4518 unlinger(newNetwork); 4519 mNetworkForRequestId.put(nri.request.requestId, newNetwork); 4520 if (!newNetwork.addRequest(nri.request)) { 4521 Slog.wtf(TAG, "BUG: " + newNetwork.name() + " already has " + nri.request); 4522 } 4523 addedRequests.add(nri); 4524 keep = true; 4525 // Tell NetworkFactories about the new score, so they can stop 4526 // trying to connect if they know they cannot match it. 4527 // TODO - this could get expensive if we have alot of requests for this 4528 // network. Think about if there is a way to reduce this. Push 4529 // netid->request mapping to each factory? 4530 sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); 4531 if (mDefaultRequest.requestId == nri.request.requestId) { 4532 isNewDefault = true; 4533 oldDefaultNetwork = currentNetwork; 4534 } 4535 } 4536 } else if (newNetwork.networkRequests.get(nri.request.requestId) != null) { 4537 // If "newNetwork" is listed as satisfying "nri" but no longer satisfies "nri", 4538 // mark it as no longer satisfying "nri". Because networks are processed by 4539 // rematchAllNetworkAndRequests() in descending score order, "currentNetwork" will 4540 // match "newNetwork" before this loop will encounter a "currentNetwork" with higher 4541 // score than "newNetwork" and where "currentNetwork" no longer satisfies "nri". 4542 // This means this code doesn't have to handle the case where "currentNetwork" no 4543 // longer satisfies "nri" when "currentNetwork" does not equal "newNetwork". 4544 if (DBG) { 4545 log("Network " + newNetwork.name() + " stopped satisfying" + 4546 " request " + nri.request.requestId); 4547 } 4548 newNetwork.networkRequests.remove(nri.request.requestId); 4549 if (currentNetwork == newNetwork) { 4550 mNetworkForRequestId.remove(nri.request.requestId); 4551 sendUpdatedScoreToFactories(nri.request, 0); 4552 } else { 4553 if (nri.isRequest()) { 4554 Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " + 4555 newNetwork.name() + 4556 " without updating mNetworkForRequestId or factories!"); 4557 } 4558 } 4559 // TODO: technically, sending CALLBACK_LOST here is 4560 // incorrect if nri is a request (not a listen) and there 4561 // is a replacement network currently connected that can 4562 // satisfy it. However, the only capability that can both 4563 // a) be requested and b) change is NET_CAPABILITY_TRUSTED, 4564 // so this code is only incorrect for a network that loses 4565 // the TRUSTED capability, which is a rare case. 4566 callCallbackForRequest(nri, newNetwork, ConnectivityManager.CALLBACK_LOST); 4567 } 4568 } 4569 // Linger any networks that are no longer needed. 4570 for (NetworkAgentInfo nai : affectedNetworks) { 4571 if (nai.lingering) { 4572 // Already lingered. Nothing to do. This can only happen if "nai" is in 4573 // "affectedNetworks" twice. The reasoning being that to get added to 4574 // "affectedNetworks", "nai" must have been satisfying a NetworkRequest 4575 // (i.e. not lingered) so it could have only been lingered by this loop. 4576 // unneeded(nai) will be false and we'll call unlinger() below which would 4577 // be bad, so handle it here. 4578 } else if (unneeded(nai)) { 4579 linger(nai); 4580 } else { 4581 // Clear nai.networkLingered we might have added above. 4582 unlinger(nai); 4583 } 4584 } 4585 if (isNewDefault) { 4586 // Notify system services that this network is up. 4587 makeDefault(newNetwork); 4588 synchronized (ConnectivityService.this) { 4589 // have a new default network, release the transition wakelock in 4590 // a second if it's held. The second pause is to allow apps 4591 // to reconnect over the new network 4592 if (mNetTransitionWakeLock.isHeld()) { 4593 mHandler.sendMessageDelayed(mHandler.obtainMessage( 4594 EVENT_CLEAR_NET_TRANSITION_WAKELOCK, 4595 mNetTransitionWakeLockSerialNumber, 0), 4596 1000); 4597 } 4598 } 4599 } 4600 4601 // do this after the default net is switched, but 4602 // before LegacyTypeTracker sends legacy broadcasts 4603 for (NetworkRequestInfo nri : addedRequests) notifyNetworkCallback(newNetwork, nri); 4604 4605 if (isNewDefault) { 4606 // Maintain the illusion: since the legacy API only 4607 // understands one network at a time, we must pretend 4608 // that the current default network disconnected before 4609 // the new one connected. 4610 if (oldDefaultNetwork != null) { 4611 mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), 4612 oldDefaultNetwork, true); 4613 } 4614 mDefaultInetConditionPublished = newNetwork.lastValidated ? 100 : 0; 4615 mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); 4616 notifyLockdownVpn(newNetwork); 4617 } 4618 4619 if (keep) { 4620 // Notify battery stats service about this network, both the normal 4621 // interface and any stacked links. 4622 // TODO: Avoid redoing this; this must only be done once when a network comes online. 4623 try { 4624 final IBatteryStats bs = BatteryStatsService.getService(); 4625 final int type = newNetwork.networkInfo.getType(); 4626 4627 final String baseIface = newNetwork.linkProperties.getInterfaceName(); 4628 bs.noteNetworkInterfaceType(baseIface, type); 4629 for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { 4630 final String stackedIface = stacked.getInterfaceName(); 4631 bs.noteNetworkInterfaceType(stackedIface, type); 4632 NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); 4633 } 4634 } catch (RemoteException ignored) { 4635 } 4636 4637 // This has to happen after the notifyNetworkCallbacks as that tickles each 4638 // ConnectivityManager instance so that legacy requests correctly bind dns 4639 // requests to this network. The legacy users are listening for this bcast 4640 // and will generally do a dns request so they can ensureRouteToHost and if 4641 // they do that before the callbacks happen they'll use the default network. 4642 // 4643 // TODO: Is there still a race here? We send the broadcast 4644 // after sending the callback, but if the app can receive the 4645 // broadcast before the callback, it might still break. 4646 // 4647 // This *does* introduce a race where if the user uses the new api 4648 // (notification callbacks) and then uses the old api (getNetworkInfo(type)) 4649 // they may get old info. Reverse this after the old startUsing api is removed. 4650 // This is on top of the multiple intent sequencing referenced in the todo above. 4651 for (int i = 0; i < newNetwork.networkRequests.size(); i++) { 4652 NetworkRequest nr = newNetwork.networkRequests.valueAt(i); 4653 if (nr.legacyType != TYPE_NONE && isRequest(nr)) { 4654 // legacy type tracker filters out repeat adds 4655 mLegacyTypeTracker.add(nr.legacyType, newNetwork); 4656 } 4657 } 4658 4659 // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, 4660 // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest 4661 // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the 4662 // newNetwork to the tracker explicitly (it's a no-op if it has already been added). 4663 if (newNetwork.isVPN()) { 4664 mLegacyTypeTracker.add(TYPE_VPN, newNetwork); 4665 } 4666 } 4667 if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) { 4668 for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { 4669 if (unneeded(nai)) { 4670 if (DBG) log("Reaping " + nai.name()); 4671 teardownUnneededNetwork(nai); 4672 } 4673 } 4674 } 4675 } 4676 4677 /** 4678 * Attempt to rematch all Networks with NetworkRequests. This may result in Networks 4679 * being disconnected. 4680 * @param changed If only one Network's score or capabilities have been modified since the last 4681 * time this function was called, pass this Network in this argument, otherwise pass 4682 * null. 4683 * @param oldScore If only one Network has been changed but its NetworkCapabilities have not 4684 * changed, pass in the Network's score (from getCurrentScore()) prior to the change via 4685 * this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if 4686 * {@code changed} is {@code null}. This is because NetworkCapabilities influence a 4687 * network's score. 4688 */ 4689 private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { 4690 // TODO: This may get slow. The "changed" parameter is provided for future optimization 4691 // to avoid the slowness. It is not simply enough to process just "changed", for 4692 // example in the case where "changed"'s score decreases and another network should begin 4693 // satifying a NetworkRequest that "changed" currently satisfies. 4694 4695 // Optimization: Only reprocess "changed" if its score improved. This is safe because it 4696 // can only add more NetworkRequests satisfied by "changed", and this is exactly what 4697 // rematchNetworkAndRequests() handles. 4698 if (changed != null && oldScore < changed.getCurrentScore()) { 4699 rematchNetworkAndRequests(changed, ReapUnvalidatedNetworks.REAP); 4700 } else { 4701 final NetworkAgentInfo[] nais = mNetworkAgentInfos.values().toArray( 4702 new NetworkAgentInfo[mNetworkAgentInfos.size()]); 4703 // Rematch higher scoring networks first to prevent requests first matching a lower 4704 // scoring network and then a higher scoring network, which could produce multiple 4705 // callbacks and inadvertently unlinger networks. 4706 Arrays.sort(nais); 4707 for (NetworkAgentInfo nai : nais) { 4708 rematchNetworkAndRequests(nai, 4709 // Only reap the last time through the loop. Reaping before all rematching 4710 // is complete could incorrectly teardown a network that hasn't yet been 4711 // rematched. 4712 (nai != nais[nais.length-1]) ? ReapUnvalidatedNetworks.DONT_REAP 4713 : ReapUnvalidatedNetworks.REAP); 4714 } 4715 } 4716 } 4717 4718 private void updateInetCondition(NetworkAgentInfo nai) { 4719 // Don't bother updating until we've graduated to validated at least once. 4720 if (!nai.everValidated) return; 4721 // For now only update icons for default connection. 4722 // TODO: Update WiFi and cellular icons separately. b/17237507 4723 if (!isDefaultNetwork(nai)) return; 4724 4725 int newInetCondition = nai.lastValidated ? 100 : 0; 4726 // Don't repeat publish. 4727 if (newInetCondition == mDefaultInetConditionPublished) return; 4728 4729 mDefaultInetConditionPublished = newInetCondition; 4730 sendInetConditionBroadcast(nai.networkInfo); 4731 } 4732 4733 private void notifyLockdownVpn(NetworkAgentInfo nai) { 4734 if (mLockdownTracker != null) { 4735 if (nai != null && nai.isVPN()) { 4736 mLockdownTracker.onVpnStateChanged(nai.networkInfo); 4737 } else { 4738 mLockdownTracker.onNetworkInfoChanged(); 4739 } 4740 } 4741 } 4742 4743 private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { 4744 NetworkInfo.State state = newInfo.getState(); 4745 NetworkInfo oldInfo = null; 4746 final int oldScore = networkAgent.getCurrentScore(); 4747 synchronized (networkAgent) { 4748 oldInfo = networkAgent.networkInfo; 4749 networkAgent.networkInfo = newInfo; 4750 } 4751 notifyLockdownVpn(networkAgent); 4752 4753 if (oldInfo != null && oldInfo.getState() == state) { 4754 if (oldInfo.isRoaming() != newInfo.isRoaming()) { 4755 if (VDBG) log("roaming status changed, notifying NetworkStatsService"); 4756 notifyIfacesChangedForNetworkStats(); 4757 } else if (VDBG) log("ignoring duplicate network state non-change"); 4758 // In either case, no further work should be needed. 4759 return; 4760 } 4761 if (DBG) { 4762 log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + 4763 (oldInfo == null ? "null" : oldInfo.getState()) + 4764 " to " + state); 4765 } 4766 4767 if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { 4768 try { 4769 // This should never fail. Specifying an already in use NetID will cause failure. 4770 if (networkAgent.isVPN()) { 4771 mNetd.createVirtualNetwork(networkAgent.network.netId, 4772 !networkAgent.linkProperties.getDnsServers().isEmpty(), 4773 (networkAgent.networkMisc == null || 4774 !networkAgent.networkMisc.allowBypass)); 4775 } else { 4776 mNetd.createPhysicalNetwork(networkAgent.network.netId, 4777 networkAgent.networkCapabilities.hasCapability( 4778 NET_CAPABILITY_NOT_RESTRICTED) ? 4779 null : NetworkManagementService.PERMISSION_SYSTEM); 4780 } 4781 } catch (Exception e) { 4782 loge("Error creating network " + networkAgent.network.netId + ": " 4783 + e.getMessage()); 4784 return; 4785 } 4786 networkAgent.created = true; 4787 updateLinkProperties(networkAgent, null); 4788 notifyIfacesChangedForNetworkStats(); 4789 4790 networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); 4791 scheduleUnvalidatedPrompt(networkAgent); 4792 4793 if (networkAgent.isVPN()) { 4794 // Temporarily disable the default proxy (not global). 4795 synchronized (mProxyLock) { 4796 if (!mDefaultProxyDisabled) { 4797 mDefaultProxyDisabled = true; 4798 if (mGlobalProxy == null && mDefaultProxy != null) { 4799 sendProxyBroadcast(null); 4800 } 4801 } 4802 } 4803 // TODO: support proxy per network. 4804 } 4805 4806 // Whether a particular NetworkRequest listen should cause signal strength thresholds to 4807 // be communicated to a particular NetworkAgent depends only on the network's immutable, 4808 // capabilities, so it only needs to be done once on initial connect, not every time the 4809 // network's capabilities change. Note that we do this before rematching the network, 4810 // so we could decide to tear it down immediately afterwards. That's fine though - on 4811 // disconnection NetworkAgents should stop any signal strength monitoring they have been 4812 // doing. 4813 updateSignalStrengthThresholds(networkAgent, "CONNECT", null); 4814 4815 // Consider network even though it is not yet validated. 4816 rematchNetworkAndRequests(networkAgent, ReapUnvalidatedNetworks.REAP); 4817 4818 // This has to happen after matching the requests, because callbacks are just requests. 4819 notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); 4820 } else if (state == NetworkInfo.State.DISCONNECTED) { 4821 networkAgent.asyncChannel.disconnect(); 4822 if (networkAgent.isVPN()) { 4823 synchronized (mProxyLock) { 4824 if (mDefaultProxyDisabled) { 4825 mDefaultProxyDisabled = false; 4826 if (mGlobalProxy == null && mDefaultProxy != null) { 4827 sendProxyBroadcast(mDefaultProxy); 4828 } 4829 } 4830 } 4831 } 4832 } else if ((oldInfo != null && oldInfo.getState() == NetworkInfo.State.SUSPENDED) || 4833 state == NetworkInfo.State.SUSPENDED) { 4834 // going into or coming out of SUSPEND: rescore and notify 4835 if (networkAgent.getCurrentScore() != oldScore) { 4836 rematchAllNetworksAndRequests(networkAgent, oldScore); 4837 } 4838 notifyNetworkCallbacks(networkAgent, (state == NetworkInfo.State.SUSPENDED ? 4839 ConnectivityManager.CALLBACK_SUSPENDED : 4840 ConnectivityManager.CALLBACK_RESUMED)); 4841 mLegacyTypeTracker.update(networkAgent); 4842 } 4843 } 4844 4845 private void updateNetworkScore(NetworkAgentInfo nai, int score) { 4846 if (VDBG) log("updateNetworkScore for " + nai.name() + " to " + score); 4847 if (score < 0) { 4848 loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + 4849 "). Bumping score to min of 0"); 4850 score = 0; 4851 } 4852 4853 final int oldScore = nai.getCurrentScore(); 4854 nai.setCurrentScore(score); 4855 4856 rematchAllNetworksAndRequests(nai, oldScore); 4857 4858 sendUpdatedScoreToFactories(nai); 4859 } 4860 4861 // notify only this one new request of the current state 4862 protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { 4863 int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; 4864 // TODO - read state from monitor to decide what to send. 4865// if (nai.networkMonitor.isLingering()) { 4866// notifyType = NetworkCallbacks.LOSING; 4867// } else if (nai.networkMonitor.isEvaluating()) { 4868// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); 4869// } 4870 if (nri.mPendingIntent == null) { 4871 callCallbackForRequest(nri, nai, notifyType); 4872 } else { 4873 sendPendingIntentForRequest(nri, nai, notifyType); 4874 } 4875 } 4876 4877 private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, int type) { 4878 // The NetworkInfo we actually send out has no bearing on the real 4879 // state of affairs. For example, if the default connection is mobile, 4880 // and a request for HIPRI has just gone away, we need to pretend that 4881 // HIPRI has just disconnected. So we need to set the type to HIPRI and 4882 // the state to DISCONNECTED, even though the network is of type MOBILE 4883 // and is still connected. 4884 NetworkInfo info = new NetworkInfo(nai.networkInfo); 4885 info.setType(type); 4886 if (state != DetailedState.DISCONNECTED) { 4887 info.setDetailedState(state, null, info.getExtraInfo()); 4888 sendConnectedBroadcast(info); 4889 } else { 4890 info.setDetailedState(state, info.getReason(), info.getExtraInfo()); 4891 Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); 4892 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); 4893 intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); 4894 if (info.isFailover()) { 4895 intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); 4896 nai.networkInfo.setFailover(false); 4897 } 4898 if (info.getReason() != null) { 4899 intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); 4900 } 4901 if (info.getExtraInfo() != null) { 4902 intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); 4903 } 4904 NetworkAgentInfo newDefaultAgent = null; 4905 if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { 4906 newDefaultAgent = getDefaultNetwork(); 4907 if (newDefaultAgent != null) { 4908 intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, 4909 newDefaultAgent.networkInfo); 4910 } else { 4911 intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); 4912 } 4913 } 4914 intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, 4915 mDefaultInetConditionPublished); 4916 sendStickyBroadcast(intent); 4917 if (newDefaultAgent != null) { 4918 sendConnectedBroadcast(newDefaultAgent.networkInfo); 4919 } 4920 } 4921 } 4922 4923 protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { 4924 if (VDBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); 4925 for (int i = 0; i < networkAgent.networkRequests.size(); i++) { 4926 NetworkRequest nr = networkAgent.networkRequests.valueAt(i); 4927 NetworkRequestInfo nri = mNetworkRequests.get(nr); 4928 if (VDBG) log(" sending notification for " + nr); 4929 if (nri.mPendingIntent == null) { 4930 callCallbackForRequest(nri, networkAgent, notifyType); 4931 } else { 4932 sendPendingIntentForRequest(nri, networkAgent, notifyType); 4933 } 4934 } 4935 } 4936 4937 private String notifyTypeToName(int notifyType) { 4938 switch (notifyType) { 4939 case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; 4940 case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; 4941 case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; 4942 case ConnectivityManager.CALLBACK_LOST: return "LOST"; 4943 case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; 4944 case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; 4945 case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; 4946 case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; 4947 } 4948 return "UNKNOWN"; 4949 } 4950 4951 /** 4952 * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the 4953 * properties tracked by NetworkStatsService on an active iface has changed. 4954 */ 4955 private void notifyIfacesChangedForNetworkStats() { 4956 try { 4957 mStatsService.forceUpdateIfaces(); 4958 } catch (Exception ignored) { 4959 } 4960 } 4961 4962 @Override 4963 public boolean addVpnAddress(String address, int prefixLength) { 4964 throwIfLockdownEnabled(); 4965 int user = UserHandle.getUserId(Binder.getCallingUid()); 4966 synchronized (mVpns) { 4967 return mVpns.get(user).addAddress(address, prefixLength); 4968 } 4969 } 4970 4971 @Override 4972 public boolean removeVpnAddress(String address, int prefixLength) { 4973 throwIfLockdownEnabled(); 4974 int user = UserHandle.getUserId(Binder.getCallingUid()); 4975 synchronized (mVpns) { 4976 return mVpns.get(user).removeAddress(address, prefixLength); 4977 } 4978 } 4979 4980 @Override 4981 public boolean setUnderlyingNetworksForVpn(Network[] networks) { 4982 throwIfLockdownEnabled(); 4983 int user = UserHandle.getUserId(Binder.getCallingUid()); 4984 boolean success; 4985 synchronized (mVpns) { 4986 success = mVpns.get(user).setUnderlyingNetworks(networks); 4987 } 4988 if (success) { 4989 notifyIfacesChangedForNetworkStats(); 4990 } 4991 return success; 4992 } 4993 4994 @Override 4995 public String getCaptivePortalServerUrl() { 4996 return NetworkMonitor.getCaptivePortalServerUrl(mContext); 4997 } 4998 4999 @Override 5000 public void startNattKeepalive(Network network, int intervalSeconds, Messenger messenger, 5001 IBinder binder, String srcAddr, int srcPort, String dstAddr) { 5002 enforceKeepalivePermission(); 5003 mKeepaliveTracker.startNattKeepalive( 5004 getNetworkAgentInfoForNetwork(network), 5005 intervalSeconds, messenger, binder, 5006 srcAddr, srcPort, dstAddr, ConnectivityManager.PacketKeepalive.NATT_PORT); 5007 } 5008 5009 @Override 5010 public void stopKeepalive(Network network, int slot) { 5011 mHandler.sendMessage(mHandler.obtainMessage( 5012 NetworkAgent.CMD_STOP_PACKET_KEEPALIVE, slot, PacketKeepalive.SUCCESS, network)); 5013 } 5014 5015 @Override 5016 public void factoryReset() { 5017 enforceConnectivityInternalPermission(); 5018 5019 if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { 5020 return; 5021 } 5022 5023 final int userId = UserHandle.getCallingUserId(); 5024 5025 // Turn airplane mode off 5026 setAirplaneMode(false); 5027 5028 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING)) { 5029 // Untether 5030 for (String tether : getTetheredIfaces()) { 5031 untether(tether); 5032 } 5033 } 5034 5035 if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { 5036 // Turn VPN off 5037 VpnConfig vpnConfig = getVpnConfig(userId); 5038 if (vpnConfig != null) { 5039 if (vpnConfig.legacy) { 5040 prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); 5041 } else { 5042 // Prevent this app (packagename = vpnConfig.user) from initiating VPN connections 5043 // in the future without user intervention. 5044 setVpnPackageAuthorization(vpnConfig.user, userId, false); 5045 5046 prepareVpn(vpnConfig.user, VpnConfig.LEGACY_VPN, userId); 5047 } 5048 } 5049 } 5050 } 5051 5052 @VisibleForTesting 5053 public NetworkMonitor createNetworkMonitor(Context context, Handler handler, 5054 NetworkAgentInfo nai, NetworkRequest defaultRequest) { 5055 return new NetworkMonitor(context, handler, nai, defaultRequest); 5056 } 5057} 5058